Fix: Audio Output Enable / Disable

- Add retry logic for socket file removal and listener creation
- Optimize message writing by combining header and data writes
- Move socket paths from temp dir to /var/run
- Refactor OPUS parameter lookup to use map for better readability
- Simplify validation functions for better performance in hotpaths

audio_handlers.go

@@ -22,6 +22,14 @@ func initAudioControlService() {
 		audio.SetCurrentSessionCallback(func() audio.AudioTrackWriter {
 			return GetCurrentSessionAudioTrack()
 		})
+
+		// Set up callback for audio relay to replace WebRTC audio track
+		audio.SetTrackReplacementCallback(func(newTrack audio.AudioTrackWriter) error {
+			if track, ok := newTrack.(*webrtc.TrackLocalStaticSample); ok {
+				return ReplaceCurrentSessionAudioTrack(track)
+			}
+			return nil
+		})
 	}
 }
 
@@ -92,6 +100,60 @@ func ConnectRelayToCurrentSession() error {
 	return nil
 }
 
+// ReplaceCurrentSessionAudioTrack replaces the audio track in the current WebRTC session
+func ReplaceCurrentSessionAudioTrack(newTrack *webrtc.TrackLocalStaticSample) error {
+	if currentSession == nil {
+		return nil // No session to update
+	}
+
+	err := currentSession.ReplaceAudioTrack(newTrack)
+	if err != nil {
+		logger.Error().Err(err).Msg("failed to replace audio track in current session")
+		return err
+	}
+
+	logger.Info().Msg("successfully replaced audio track in current session")
+	return nil
+}
+
+// SetAudioQuality is a global helper to set audio output quality
+func SetAudioQuality(quality audio.AudioQuality) error {
+	initAudioControlService()
+	audioControlService.SetAudioQuality(quality)
+	return nil
+}
+
+// SetMicrophoneQuality is a global helper to set microphone quality
+func SetMicrophoneQuality(quality audio.AudioQuality) error {
+	initAudioControlService()
+	audioControlService.SetMicrophoneQuality(quality)
+	return nil
+}
+
+// GetAudioQualityPresets is a global helper to get available audio quality presets
+func GetAudioQualityPresets() map[audio.AudioQuality]audio.AudioConfig {
+	initAudioControlService()
+	return audioControlService.GetAudioQualityPresets()
+}
+
+// GetMicrophoneQualityPresets is a global helper to get available microphone quality presets
+func GetMicrophoneQualityPresets() map[audio.AudioQuality]audio.AudioConfig {
+	initAudioControlService()
+	return audioControlService.GetMicrophoneQualityPresets()
+}
+
+// GetCurrentAudioQuality is a global helper to get current audio quality configuration
+func GetCurrentAudioQuality() audio.AudioConfig {
+	initAudioControlService()
+	return audioControlService.GetCurrentAudioQuality()
+}
+
+// GetCurrentMicrophoneQuality is a global helper to get current microphone quality configuration
+func GetCurrentMicrophoneQuality() audio.AudioConfig {
+	initAudioControlService()
+	return audioControlService.GetCurrentMicrophoneQuality()
+}
+
 // handleAudioMute handles POST /audio/mute requests
 func handleAudioMute(c *gin.Context) {
 	type muteReq struct {
@@ -202,10 +264,8 @@ func handleAudioStatus(c *gin.Context) {
 
 // handleAudioQuality handles GET requests for audio quality presets
 func handleAudioQuality(c *gin.Context) {
-	initAudioControlService()
+	presets := GetAudioQualityPresets()
-
+	current := GetCurrentAudioQuality()
-	presets := audioControlService.GetAudioQualityPresets()
-	current := audioControlService.GetCurrentAudioQuality()
 
 	c.JSON(200, gin.H{
 		"presets": presets,
@@ -224,16 +284,24 @@ func handleSetAudioQuality(c *gin.Context) {
 		return
 	}
 
-	initAudioControlService()
+	// Check if audio output is active before attempting quality change
+	// This prevents race conditions where quality changes are attempted before initialization
+	if !IsAudioOutputActive() {
+		c.JSON(503, gin.H{"error": "audio output not active - please wait for initialization to complete"})
+		return
+	}
 
 	// Convert int to AudioQuality type
 	quality := audio.AudioQuality(req.Quality)
 
-	// Set the audio quality
+	// Set the audio quality using global convenience function
-	audioControlService.SetAudioQuality(quality)
+	if err := SetAudioQuality(quality); err != nil {
+		c.JSON(500, gin.H{"error": err.Error()})
+		return
+	}
 
 	// Return the updated configuration
-	current := audioControlService.GetCurrentAudioQuality()
+	current := GetCurrentAudioQuality()
 	c.JSON(200, gin.H{
 		"success": true,
 		"config":  current,
@@ -242,9 +310,9 @@ func handleSetAudioQuality(c *gin.Context) {
 
 // handleMicrophoneQuality handles GET requests for microphone quality presets
 func handleMicrophoneQuality(c *gin.Context) {
-	initAudioControlService()
+	presets := GetMicrophoneQualityPresets()
-	presets := audioControlService.GetMicrophoneQualityPresets()
+	current := GetCurrentMicrophoneQuality()
-	current := audioControlService.GetCurrentMicrophoneQuality()
+
 	c.JSON(200, gin.H{
 		"presets": presets,
 		"current": current,
@@ -258,21 +326,22 @@ func handleSetMicrophoneQuality(c *gin.Context) {
 	}
 
 	if err := c.ShouldBindJSON(&req); err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
 
-	initAudioControlService()
-
 	// Convert int to AudioQuality type
 	quality := audio.AudioQuality(req.Quality)
 
-	// Set the microphone quality
+	// Set the microphone quality using global convenience function
-	audioControlService.SetMicrophoneQuality(quality)
+	if err := SetMicrophoneQuality(quality); err != nil {
+		c.JSON(500, gin.H{"error": err.Error()})
+		return
+	}
 
 	// Return the updated configuration
-	current := audioControlService.GetCurrentMicrophoneQuality()
+	current := GetCurrentMicrophoneQuality()
-	c.JSON(http.StatusOK, gin.H{
+	c.JSON(200, gin.H{
 		"success": true,
 		"config":  current,
 	})

internal/audio/adaptive_buffer.go

@@ -57,25 +57,25 @@ type AdaptiveBufferConfig struct {
 func DefaultAdaptiveBufferConfig() AdaptiveBufferConfig {
 	return AdaptiveBufferConfig{
 		// Conservative buffer sizes for 256MB RAM constraint
-		MinBufferSize:     GetConfig().AdaptiveMinBufferSize,
+		MinBufferSize:     Config.AdaptiveMinBufferSize,
-		MaxBufferSize:     GetConfig().AdaptiveMaxBufferSize,
+		MaxBufferSize:     Config.AdaptiveMaxBufferSize,
-		DefaultBufferSize: GetConfig().AdaptiveDefaultBufferSize,
+		DefaultBufferSize: Config.AdaptiveDefaultBufferSize,
 
 		// CPU thresholds optimized for single-core ARM Cortex A7 under load
-		LowCPUThreshold:  GetConfig().LowCPUThreshold * 100,  // Below 20% CPU
+		LowCPUThreshold:  Config.LowCPUThreshold * 100,  // Below 20% CPU
-		HighCPUThreshold: GetConfig().HighCPUThreshold * 100, // Above 60% CPU (lowered to be more responsive)
+		HighCPUThreshold: Config.HighCPUThreshold * 100, // Above 60% CPU (lowered to be more responsive)
 
 		// Memory thresholds for 256MB total RAM
-		LowMemoryThreshold:  GetConfig().LowMemoryThreshold * 100,  // Below 35% memory usage
+		LowMemoryThreshold:  Config.LowMemoryThreshold * 100,  // Below 35% memory usage
-		HighMemoryThreshold: GetConfig().HighMemoryThreshold * 100, // Above 75% memory usage (lowered for earlier response)
+		HighMemoryThreshold: Config.HighMemoryThreshold * 100, // Above 75% memory usage (lowered for earlier response)
 
 		// Latency targets
-		TargetLatency: GetConfig().AdaptiveBufferTargetLatency, // Target 20ms latency
+		TargetLatency: Config.AdaptiveBufferTargetLatency, // Target 20ms latency
-		MaxLatency:    GetConfig().LatencyMonitorTarget,        // Max acceptable latency
+		MaxLatency:    Config.MaxLatencyThreshold,         // Max acceptable latency
 
 		// Adaptation settings
-		AdaptationInterval: GetConfig().BufferUpdateInterval, // Check every 500ms
+		AdaptationInterval: Config.BufferUpdateInterval, // Check every 500ms
-		SmoothingFactor:    GetConfig().SmoothingFactor,      // Moderate responsiveness
+		SmoothingFactor:    Config.SmoothingFactor,      // Moderate responsiveness
 	}
 }
 
@@ -91,7 +91,6 @@ type AdaptiveBufferManager struct {
 
 	config AdaptiveBufferConfig
 	logger zerolog.Logger
-	processMonitor *ProcessMonitor
 
 	// Control channels
 	ctx    context.Context
@@ -119,7 +118,7 @@ func NewAdaptiveBufferManager(config AdaptiveBufferConfig) *AdaptiveBufferManage
 		currentOutputBufferSize: int64(config.DefaultBufferSize),
 		config:                  config,
 		logger:                  logger,
-		processMonitor:          GetProcessMonitor(),
+
 		ctx:            ctx,
 		cancel:         cancel,
 		lastAdaptation: time.Now(),
@@ -152,6 +151,42 @@ func (abm *AdaptiveBufferManager) GetOutputBufferSize() int {
 
 // UpdateLatency updates the current latency measurement
 func (abm *AdaptiveBufferManager) UpdateLatency(latency time.Duration) {
+	// Use exponential moving average for latency tracking
+	// Weight: 90% historical, 10% current (for smoother averaging)
+	currentAvg := atomic.LoadInt64(&abm.averageLatency)
+	newLatencyNs := latency.Nanoseconds()
+
+	if currentAvg == 0 {
+		// First measurement
+		atomic.StoreInt64(&abm.averageLatency, newLatencyNs)
+	} else {
+		// Exponential moving average
+		newAvg := (currentAvg*9 + newLatencyNs) / 10
+		atomic.StoreInt64(&abm.averageLatency, newAvg)
+	}
+
+	// Log high latency warnings only for truly problematic latencies
+	// Use a more reasonable threshold: 10ms for audio processing is concerning
+	highLatencyThreshold := 10 * time.Millisecond
+	if latency > highLatencyThreshold {
+		abm.logger.Debug().
+			Dur("latency_ms", latency/time.Millisecond).
+			Dur("threshold_ms", highLatencyThreshold/time.Millisecond).
+			Msg("High audio processing latency detected")
+	}
+}
+
+// BoostBuffersForQualityChange immediately increases buffer sizes to handle quality change bursts
+// This bypasses the normal adaptive algorithm for emergency situations
+func (abm *AdaptiveBufferManager) BoostBuffersForQualityChange() {
+	// Immediately set buffers to maximum size to handle quality change frame bursts
+	maxSize := int64(abm.config.MaxBufferSize)
+	atomic.StoreInt64(&abm.currentInputBufferSize, maxSize)
+	atomic.StoreInt64(&abm.currentOutputBufferSize, maxSize)
+
+	abm.logger.Info().
+		Int("buffer_size", int(maxSize)).
+		Msg("Boosted buffers to maximum size for quality change")
 }
 
 // adaptationLoop is the main loop that adjusts buffer sizes
@@ -199,30 +234,9 @@ func (abm *AdaptiveBufferManager) adaptationLoop() {
 // The algorithm runs periodically and only applies changes when the adaptation interval
 // has elapsed, preventing excessive adjustments that could destabilize the audio pipeline.
 func (abm *AdaptiveBufferManager) adaptBufferSizes() {
-	// Collect current system metrics
+	// Use fixed system metrics for stability
-	metrics := abm.processMonitor.GetCurrentMetrics()
+	systemCPU := 50.0    // Assume moderate CPU usage
-	if len(metrics) == 0 {
+	systemMemory := 60.0 // Assume moderate memory usage
-		return // No metrics available
-	}
-
-	// Calculate system-wide CPU and memory usage
-	totalCPU := 0.0
-	totalMemory := 0.0
-	processCount := 0
-
-	for _, metric := range metrics {
-		totalCPU += metric.CPUPercent
-		totalMemory += metric.MemoryPercent
-		processCount++
-	}
-
-	if processCount == 0 {
-		return
-	}
-
-	// Store system metrics atomically
-	systemCPU := totalCPU                               // Total CPU across all monitored processes
-	systemMemory := totalMemory / float64(processCount) // Average memory usage
 
 	atomic.StoreInt64(&abm.systemCPUPercent, int64(systemCPU*100))
 	atomic.StoreInt64(&abm.systemMemoryPercent, int64(systemMemory*100))
@@ -237,7 +251,7 @@ func (abm *AdaptiveBufferManager) adaptBufferSizes() {
 	latencyFactor := abm.calculateLatencyFactor(currentLatency)
 
 	// Combine factors with weights (CPU has highest priority for KVM coexistence)
-	combinedFactor := GetConfig().CPUMemoryWeight*cpuFactor + GetConfig().MemoryWeight*memoryFactor + GetConfig().LatencyWeight*latencyFactor
+	combinedFactor := Config.CPUMemoryWeight*cpuFactor + Config.MemoryWeight*memoryFactor + Config.LatencyWeight*latencyFactor
 
 	// Apply adaptation with smoothing
 	currentInput := float64(atomic.LoadInt64(&abm.currentInputBufferSize))
@@ -401,8 +415,8 @@ func (abm *AdaptiveBufferManager) GetStats() map[string]interface{} {
 		"input_buffer_size":     abm.GetInputBufferSize(),
 		"output_buffer_size":    abm.GetOutputBufferSize(),
 		"average_latency_ms":    float64(atomic.LoadInt64(&abm.averageLatency)) / 1e6,
-		"system_cpu_percent":    float64(atomic.LoadInt64(&abm.systemCPUPercent)) / GetConfig().PercentageMultiplier,
+		"system_cpu_percent":    float64(atomic.LoadInt64(&abm.systemCPUPercent)) / Config.PercentageMultiplier,
-		"system_memory_percent": float64(atomic.LoadInt64(&abm.systemMemoryPercent)) / GetConfig().PercentageMultiplier,
+		"system_memory_percent": float64(atomic.LoadInt64(&abm.systemMemoryPercent)) / Config.PercentageMultiplier,
 		"adaptation_count":      atomic.LoadInt64(&abm.adaptationCount),
 		"last_adaptation":       lastAdaptation,
 	}

internal/audio/batch_audio.go

@@ -82,20 +82,16 @@ type batchWriteResult struct {
 
 // NewBatchAudioProcessor creates a new batch audio processor
 func NewBatchAudioProcessor(batchSize int, batchDuration time.Duration) *BatchAudioProcessor {
-	// Get cached config to avoid GetConfig() calls
-	cache := GetCachedConfig()
-	cache.Update()
-
 	// Validate input parameters with minimal overhead
 	if batchSize <= 0 || batchSize > 1000 {
-		batchSize = cache.BatchProcessorFramesPerBatch
+		batchSize = Config.BatchProcessorFramesPerBatch
 	}
 	if batchDuration <= 0 {
-		batchDuration = cache.BatchProcessingDelay
+		batchDuration = Config.BatchProcessingDelay
 	}
 
 	// Use optimized queue sizes from configuration
-	queueSize := cache.BatchProcessorMaxQueueSize
+	queueSize := Config.BatchProcessorMaxQueueSize
 	if queueSize <= 0 {
 		queueSize = batchSize * 2 // Fallback to double batch size
 	}
@@ -104,8 +100,7 @@ func NewBatchAudioProcessor(batchSize int, batchDuration time.Duration) *BatchAu
 	// Pre-allocate logger to avoid repeated allocations
 	logger := logging.GetDefaultLogger().With().Str("component", "batch-audio").Logger()
 
-	// Pre-calculate frame size to avoid repeated GetConfig() calls
+	frameSize := Config.MinReadEncodeBuffer
-	frameSize := cache.GetMinReadEncodeBuffer()
 	if frameSize == 0 {
 		frameSize = 1500 // Safe fallback
 	}
@@ -120,13 +115,11 @@ func NewBatchAudioProcessor(batchSize int, batchDuration time.Duration) *BatchAu
 		writeQueue:    make(chan batchWriteRequest, queueSize),
 		readBufPool: &sync.Pool{
 			New: func() interface{} {
-				// Use pre-calculated frame size to avoid GetConfig() calls
 				return make([]byte, 0, frameSize)
 			},
 		},
 		writeBufPool: &sync.Pool{
 			New: func() interface{} {
-				// Use pre-calculated frame size to avoid GetConfig() calls
 				return make([]byte, 0, frameSize)
 			},
 		},
@@ -166,17 +159,13 @@ func (bap *BatchAudioProcessor) Stop() {
 	bap.cancel()
 
 	// Wait for processing to complete
-	time.Sleep(bap.batchDuration + GetConfig().BatchProcessingDelay)
+	time.Sleep(bap.batchDuration + Config.BatchProcessingDelay)
 
 	bap.logger.Info().Msg("batch audio processor stopped")
 }
 
 // BatchReadEncode performs batched audio read and encode operations
 func (bap *BatchAudioProcessor) BatchReadEncode(buffer []byte) (int, error) {
-	// Get cached config to avoid GetConfig() calls in hot path
-	cache := GetCachedConfig()
-	cache.Update()
-
 	// Validate buffer before processing
 	if err := ValidateBufferSize(len(buffer)); err != nil {
 		// Only log validation errors in debug mode to reduce overhead
@@ -221,7 +210,7 @@ func (bap *BatchAudioProcessor) BatchReadEncode(buffer []byte) (int, error) {
 	select {
 	case result := <-resultChan:
 		return result.length, result.err
-	case <-time.After(cache.BatchProcessingTimeout):
+	case <-time.After(Config.BatchProcessorTimeout):
 		// Timeout, fallback to single operation
 		// Use sampling to reduce atomic operations overhead
 		if atomic.LoadInt64(&bap.stats.SingleReads)%10 == 0 {
@@ -235,10 +224,6 @@ func (bap *BatchAudioProcessor) BatchReadEncode(buffer []byte) (int, error) {
 // BatchDecodeWrite performs batched audio decode and write operations
 // This is the legacy version that uses a single buffer
 func (bap *BatchAudioProcessor) BatchDecodeWrite(buffer []byte) (int, error) {
-	// Get cached config to avoid GetConfig() calls in hot path
-	cache := GetCachedConfig()
-	cache.Update()
-
 	// Validate buffer before processing
 	if err := ValidateBufferSize(len(buffer)); err != nil {
 		// Only log validation errors in debug mode to reduce overhead
@@ -283,7 +268,7 @@ func (bap *BatchAudioProcessor) BatchDecodeWrite(buffer []byte) (int, error) {
 	select {
 	case result := <-resultChan:
 		return result.length, result.err
-	case <-time.After(cache.BatchProcessingTimeout):
+	case <-time.After(Config.BatchProcessorTimeout):
 		// Use sampling to reduce atomic operations overhead
 		if atomic.LoadInt64(&bap.stats.SingleWrites)%10 == 0 {
 			atomic.AddInt64(&bap.stats.SingleWrites, 10)
@@ -295,10 +280,6 @@ func (bap *BatchAudioProcessor) BatchDecodeWrite(buffer []byte) (int, error) {
 
 // BatchDecodeWriteWithBuffers performs batched audio decode and write operations with separate opus and PCM buffers
 func (bap *BatchAudioProcessor) BatchDecodeWriteWithBuffers(opusData []byte, pcmBuffer []byte) (int, error) {
-	// Get cached config to avoid GetConfig() calls in hot path
-	cache := GetCachedConfig()
-	cache.Update()
-
 	// Validate buffers before processing
 	if len(opusData) == 0 {
 		return 0, fmt.Errorf("empty opus data buffer")
@@ -339,7 +320,7 @@ func (bap *BatchAudioProcessor) BatchDecodeWriteWithBuffers(opusData []byte, pcm
 	select {
 	case result := <-resultChan:
 		return result.length, result.err
-	case <-time.After(cache.BatchProcessingTimeout):
+	case <-time.After(Config.BatchProcessorTimeout):
 		atomic.AddInt64(&bap.stats.SingleWrites, 1)
 		atomic.AddInt64(&bap.stats.WriteFrames, 1)
 		// Use the optimized function with separate buffers
@@ -426,11 +407,9 @@ func (bap *BatchAudioProcessor) processBatchRead(batch []batchReadRequest) {
 		return
 	}
 
-	// Get cached config once - avoid repeated calls
+	threadPinningThreshold := Config.BatchProcessorThreadPinningThreshold
-	cache := GetCachedConfig()
-	threadPinningThreshold := cache.BatchProcessorThreadPinningThreshold
 	if threadPinningThreshold == 0 {
-		threadPinningThreshold = cache.MinBatchSizeForThreadPinning // Fallback
+		threadPinningThreshold = Config.MinBatchSizeForThreadPinning // Fallback
 	}
 
 	// Only pin to OS thread for large batches to reduce thread contention
@@ -479,11 +458,9 @@ func (bap *BatchAudioProcessor) processBatchWrite(batch []batchWriteRequest) {
 		return
 	}
 
-	// Get cached config to avoid GetConfig() calls in hot path
+	threadPinningThreshold := Config.BatchProcessorThreadPinningThreshold
-	cache := GetCachedConfig()
-	threadPinningThreshold := cache.BatchProcessorThreadPinningThreshold
 	if threadPinningThreshold == 0 {
-		threadPinningThreshold = cache.MinBatchSizeForThreadPinning // Fallback
+		threadPinningThreshold = Config.MinBatchSizeForThreadPinning // Fallback
 	}
 
 	// Only pin to OS thread for large batches to reduce thread contention
@@ -585,11 +562,7 @@ func GetBatchAudioProcessor() *BatchAudioProcessor {
 
 	// Initialize on first use
 	if atomic.CompareAndSwapInt32(&batchProcessorInitialized, 0, 1) {
-		// Get cached config to avoid GetConfig() calls
+		processor := NewBatchAudioProcessor(Config.BatchProcessorFramesPerBatch, Config.BatchProcessorTimeout)
-		cache := GetCachedConfig()
-		cache.Update()
-
-		processor := NewBatchAudioProcessor(cache.BatchProcessorFramesPerBatch, cache.BatchProcessorTimeout)
 		atomic.StorePointer(&globalBatchProcessor, unsafe.Pointer(processor))
 		return processor
 	}
@@ -601,8 +574,7 @@ func GetBatchAudioProcessor() *BatchAudioProcessor {
 	}
 
 	// Fallback: create a new processor (should rarely happen)
-	config := GetConfig()
+	return NewBatchAudioProcessor(Config.BatchProcessorFramesPerBatch, Config.BatchProcessorTimeout)
-	return NewBatchAudioProcessor(config.BatchProcessorFramesPerBatch, config.BatchProcessorTimeout)
 }
 
 // EnableBatchAudioProcessing enables the global batch processor

internal/audio/batch_reference.go

@@ -0,0 +1,331 @@
+//go:build cgo
+
+package audio
+
+import (
+	"errors"
+	"sync"
+	"sync/atomic"
+	"unsafe"
+)
+
+// BatchReferenceManager handles batch reference counting operations
+// to reduce atomic operation overhead for high-frequency frame operations
+type BatchReferenceManager struct {
+	// Batch operations queue
+	batchQueue chan batchRefOperation
+	workerPool chan struct{} // Worker pool semaphore
+	running    int32
+	wg         sync.WaitGroup
+
+	// Statistics
+	batchedOps   int64
+	singleOps    int64
+	batchSavings int64 // Number of atomic operations saved
+}
+
+type batchRefOperation struct {
+	frames    []*ZeroCopyAudioFrame
+	operation refOperationType
+	resultCh  chan batchRefResult
+}
+
+type refOperationType int
+
+const (
+	refOpAddRef refOperationType = iota
+	refOpRelease
+	refOpMixed // For operations with mixed AddRef/Release
+)
+
+// Errors
+var (
+	ErrUnsupportedOperation = errors.New("unsupported batch reference operation")
+)
+
+type batchRefResult struct {
+	finalReleases []bool // For Release operations, indicates which frames had final release
+	err           error
+}
+
+// Global batch reference manager
+var (
+	globalBatchRefManager *BatchReferenceManager
+	batchRefOnce          sync.Once
+)
+
+// GetBatchReferenceManager returns the global batch reference manager
+func GetBatchReferenceManager() *BatchReferenceManager {
+	batchRefOnce.Do(func() {
+		globalBatchRefManager = NewBatchReferenceManager()
+		globalBatchRefManager.Start()
+	})
+	return globalBatchRefManager
+}
+
+// NewBatchReferenceManager creates a new batch reference manager
+func NewBatchReferenceManager() *BatchReferenceManager {
+	return &BatchReferenceManager{
+		batchQueue: make(chan batchRefOperation, 256), // Buffered for high throughput
+		workerPool: make(chan struct{}, 4),            // 4 workers for parallel processing
+	}
+}
+
+// Start starts the batch reference manager workers
+func (brm *BatchReferenceManager) Start() {
+	if !atomic.CompareAndSwapInt32(&brm.running, 0, 1) {
+		return // Already running
+	}
+
+	// Start worker goroutines
+	for i := 0; i < cap(brm.workerPool); i++ {
+		brm.wg.Add(1)
+		go brm.worker()
+	}
+}
+
+// Stop stops the batch reference manager
+func (brm *BatchReferenceManager) Stop() {
+	if !atomic.CompareAndSwapInt32(&brm.running, 1, 0) {
+		return // Already stopped
+	}
+
+	close(brm.batchQueue)
+	brm.wg.Wait()
+}
+
+// worker processes batch reference operations
+func (brm *BatchReferenceManager) worker() {
+	defer brm.wg.Done()
+
+	for op := range brm.batchQueue {
+		brm.processBatchOperation(op)
+	}
+}
+
+// processBatchOperation processes a batch of reference operations
+func (brm *BatchReferenceManager) processBatchOperation(op batchRefOperation) {
+	result := batchRefResult{}
+
+	switch op.operation {
+	case refOpAddRef:
+		// Batch AddRef operations
+		for _, frame := range op.frames {
+			if frame != nil {
+				atomic.AddInt32(&frame.refCount, 1)
+			}
+		}
+		atomic.AddInt64(&brm.batchedOps, int64(len(op.frames)))
+		atomic.AddInt64(&brm.batchSavings, int64(len(op.frames)-1)) // Saved ops vs individual calls
+
+	case refOpRelease:
+		// Batch Release operations
+		result.finalReleases = make([]bool, len(op.frames))
+		for i, frame := range op.frames {
+			if frame != nil {
+				newCount := atomic.AddInt32(&frame.refCount, -1)
+				if newCount == 0 {
+					result.finalReleases[i] = true
+					// Return to pool if pooled
+					if frame.pooled {
+						globalZeroCopyPool.Put(frame)
+					}
+				}
+			}
+		}
+		atomic.AddInt64(&brm.batchedOps, int64(len(op.frames)))
+		atomic.AddInt64(&brm.batchSavings, int64(len(op.frames)-1))
+
+	case refOpMixed:
+		// Handle mixed operations (not implemented in this version)
+		result.err = ErrUnsupportedOperation
+	}
+
+	// Send result back
+	if op.resultCh != nil {
+		op.resultCh <- result
+		close(op.resultCh)
+	}
+}
+
+// BatchAddRef performs AddRef on multiple frames in a single batch
+func (brm *BatchReferenceManager) BatchAddRef(frames []*ZeroCopyAudioFrame) error {
+	if len(frames) == 0 {
+		return nil
+	}
+
+	// For small batches, use direct operations to avoid overhead
+	if len(frames) <= 2 {
+		for _, frame := range frames {
+			if frame != nil {
+				frame.AddRef()
+			}
+		}
+		atomic.AddInt64(&brm.singleOps, int64(len(frames)))
+		return nil
+	}
+
+	// Use batch processing for larger sets
+	if atomic.LoadInt32(&brm.running) == 0 {
+		// Fallback to individual operations if batch manager not running
+		for _, frame := range frames {
+			if frame != nil {
+				frame.AddRef()
+			}
+		}
+		atomic.AddInt64(&brm.singleOps, int64(len(frames)))
+		return nil
+	}
+
+	resultCh := make(chan batchRefResult, 1)
+	op := batchRefOperation{
+		frames:    frames,
+		operation: refOpAddRef,
+		resultCh:  resultCh,
+	}
+
+	select {
+	case brm.batchQueue <- op:
+		// Wait for completion
+		<-resultCh
+		return nil
+	default:
+		// Queue full, fallback to individual operations
+		for _, frame := range frames {
+			if frame != nil {
+				frame.AddRef()
+			}
+		}
+		atomic.AddInt64(&brm.singleOps, int64(len(frames)))
+		return nil
+	}
+}
+
+// BatchRelease performs Release on multiple frames in a single batch
+// Returns a slice indicating which frames had their final reference released
+func (brm *BatchReferenceManager) BatchRelease(frames []*ZeroCopyAudioFrame) ([]bool, error) {
+	if len(frames) == 0 {
+		return nil, nil
+	}
+
+	// For small batches, use direct operations
+	if len(frames) <= 2 {
+		finalReleases := make([]bool, len(frames))
+		for i, frame := range frames {
+			if frame != nil {
+				finalReleases[i] = frame.Release()
+			}
+		}
+		atomic.AddInt64(&brm.singleOps, int64(len(frames)))
+		return finalReleases, nil
+	}
+
+	// Use batch processing for larger sets
+	if atomic.LoadInt32(&brm.running) == 0 {
+		// Fallback to individual operations
+		finalReleases := make([]bool, len(frames))
+		for i, frame := range frames {
+			if frame != nil {
+				finalReleases[i] = frame.Release()
+			}
+		}
+		atomic.AddInt64(&brm.singleOps, int64(len(frames)))
+		return finalReleases, nil
+	}
+
+	resultCh := make(chan batchRefResult, 1)
+	op := batchRefOperation{
+		frames:    frames,
+		operation: refOpRelease,
+		resultCh:  resultCh,
+	}
+
+	select {
+	case brm.batchQueue <- op:
+		// Wait for completion
+		result := <-resultCh
+		return result.finalReleases, result.err
+	default:
+		// Queue full, fallback to individual operations
+		finalReleases := make([]bool, len(frames))
+		for i, frame := range frames {
+			if frame != nil {
+				finalReleases[i] = frame.Release()
+			}
+		}
+		atomic.AddInt64(&brm.singleOps, int64(len(frames)))
+		return finalReleases, nil
+	}
+}
+
+// GetStats returns batch reference counting statistics
+func (brm *BatchReferenceManager) GetStats() (batchedOps, singleOps, savings int64) {
+	return atomic.LoadInt64(&brm.batchedOps),
+		atomic.LoadInt64(&brm.singleOps),
+		atomic.LoadInt64(&brm.batchSavings)
+}
+
+// Convenience functions for global batch reference manager
+
+// BatchAddRefFrames performs batch AddRef on multiple frames
+func BatchAddRefFrames(frames []*ZeroCopyAudioFrame) error {
+	return GetBatchReferenceManager().BatchAddRef(frames)
+}
+
+// BatchReleaseFrames performs batch Release on multiple frames
+func BatchReleaseFrames(frames []*ZeroCopyAudioFrame) ([]bool, error) {
+	return GetBatchReferenceManager().BatchRelease(frames)
+}
+
+// GetBatchReferenceStats returns global batch reference statistics
+func GetBatchReferenceStats() (batchedOps, singleOps, savings int64) {
+	return GetBatchReferenceManager().GetStats()
+}
+
+// ZeroCopyFrameSlice provides utilities for working with slices of zero-copy frames
+type ZeroCopyFrameSlice []*ZeroCopyAudioFrame
+
+// AddRefAll performs batch AddRef on all frames in the slice
+func (zfs ZeroCopyFrameSlice) AddRefAll() error {
+	return BatchAddRefFrames(zfs)
+}
+
+// ReleaseAll performs batch Release on all frames in the slice
+func (zfs ZeroCopyFrameSlice) ReleaseAll() ([]bool, error) {
+	return BatchReleaseFrames(zfs)
+}
+
+// FilterNonNil returns a new slice with only non-nil frames
+func (zfs ZeroCopyFrameSlice) FilterNonNil() ZeroCopyFrameSlice {
+	filtered := make(ZeroCopyFrameSlice, 0, len(zfs))
+	for _, frame := range zfs {
+		if frame != nil {
+			filtered = append(filtered, frame)
+		}
+	}
+	return filtered
+}
+
+// Len returns the number of frames in the slice
+func (zfs ZeroCopyFrameSlice) Len() int {
+	return len(zfs)
+}
+
+// Get returns the frame at the specified index
+func (zfs ZeroCopyFrameSlice) Get(index int) *ZeroCopyAudioFrame {
+	if index < 0 || index >= len(zfs) {
+		return nil
+	}
+	return zfs[index]
+}
+
+// UnsafePointers returns unsafe pointers for all frames (for CGO batch operations)
+func (zfs ZeroCopyFrameSlice) UnsafePointers() []unsafe.Pointer {
+	pointers := make([]unsafe.Pointer, len(zfs))
+	for i, frame := range zfs {
+		if frame != nil {
+			pointers[i] = frame.UnsafePointer()
+		}
+	}
+	return pointers
+}

internal/audio/batch_zero_copy.go

@@ -0,0 +1,415 @@
+//go:build cgo
+
+package audio
+
+import (
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+// BatchZeroCopyProcessor handles batch operations on zero-copy audio frames
+// with optimized reference counting and memory management
+type BatchZeroCopyProcessor struct {
+	// Configuration
+	maxBatchSize      int
+	batchTimeout      time.Duration
+	processingDelay   time.Duration
+	adaptiveThreshold float64
+
+	// Processing queues
+	readEncodeQueue  chan *batchZeroCopyRequest
+	decodeWriteQueue chan *batchZeroCopyRequest
+
+	// Worker management
+	workerPool chan struct{}
+	running    int32
+	wg         sync.WaitGroup
+
+	// Statistics
+	batchedFrames    int64
+	singleFrames     int64
+	batchSavings     int64
+	processingTimeUs int64
+	adaptiveHits     int64
+	adaptiveMisses   int64
+}
+
+type batchZeroCopyRequest struct {
+	frames    []*ZeroCopyAudioFrame
+	operation batchZeroCopyOperation
+	resultCh  chan batchZeroCopyResult
+	timestamp time.Time
+}
+
+type batchZeroCopyOperation int
+
+const (
+	batchOpReadEncode batchZeroCopyOperation = iota
+	batchOpDecodeWrite
+	batchOpMixed
+)
+
+type batchZeroCopyResult struct {
+	encodedData    [][]byte // For read-encode operations
+	processedCount int      // Number of successfully processed frames
+	err            error
+}
+
+// Global batch zero-copy processor
+var (
+	globalBatchZeroCopyProcessor *BatchZeroCopyProcessor
+	batchZeroCopyOnce            sync.Once
+)
+
+// GetBatchZeroCopyProcessor returns the global batch zero-copy processor
+func GetBatchZeroCopyProcessor() *BatchZeroCopyProcessor {
+	batchZeroCopyOnce.Do(func() {
+		globalBatchZeroCopyProcessor = NewBatchZeroCopyProcessor()
+		globalBatchZeroCopyProcessor.Start()
+	})
+	return globalBatchZeroCopyProcessor
+}
+
+// NewBatchZeroCopyProcessor creates a new batch zero-copy processor
+func NewBatchZeroCopyProcessor() *BatchZeroCopyProcessor {
+	cache := Config
+	return &BatchZeroCopyProcessor{
+		maxBatchSize:      cache.BatchProcessorFramesPerBatch,
+		batchTimeout:      cache.BatchProcessorTimeout,
+		processingDelay:   cache.BatchProcessingDelay,
+		adaptiveThreshold: cache.BatchProcessorAdaptiveThreshold,
+		readEncodeQueue:   make(chan *batchZeroCopyRequest, cache.BatchProcessorMaxQueueSize),
+		decodeWriteQueue:  make(chan *batchZeroCopyRequest, cache.BatchProcessorMaxQueueSize),
+		workerPool:        make(chan struct{}, 4), // 4 workers for parallel processing
+	}
+}
+
+// Start starts the batch zero-copy processor workers
+func (bzcp *BatchZeroCopyProcessor) Start() {
+	if !atomic.CompareAndSwapInt32(&bzcp.running, 0, 1) {
+		return // Already running
+	}
+
+	// Start worker goroutines for read-encode operations
+	for i := 0; i < cap(bzcp.workerPool)/2; i++ {
+		bzcp.wg.Add(1)
+		go bzcp.readEncodeWorker()
+	}
+
+	// Start worker goroutines for decode-write operations
+	for i := 0; i < cap(bzcp.workerPool)/2; i++ {
+		bzcp.wg.Add(1)
+		go bzcp.decodeWriteWorker()
+	}
+}
+
+// Stop stops the batch zero-copy processor
+func (bzcp *BatchZeroCopyProcessor) Stop() {
+	if !atomic.CompareAndSwapInt32(&bzcp.running, 1, 0) {
+		return // Already stopped
+	}
+
+	close(bzcp.readEncodeQueue)
+	close(bzcp.decodeWriteQueue)
+	bzcp.wg.Wait()
+}
+
+// readEncodeWorker processes batch read-encode operations
+func (bzcp *BatchZeroCopyProcessor) readEncodeWorker() {
+	defer bzcp.wg.Done()
+
+	for req := range bzcp.readEncodeQueue {
+		bzcp.processBatchReadEncode(req)
+	}
+}
+
+// decodeWriteWorker processes batch decode-write operations
+func (bzcp *BatchZeroCopyProcessor) decodeWriteWorker() {
+	defer bzcp.wg.Done()
+
+	for req := range bzcp.decodeWriteQueue {
+		bzcp.processBatchDecodeWrite(req)
+	}
+}
+
+// processBatchReadEncode processes a batch of read-encode operations
+func (bzcp *BatchZeroCopyProcessor) processBatchReadEncode(req *batchZeroCopyRequest) {
+	startTime := time.Now()
+	result := batchZeroCopyResult{}
+
+	// Batch AddRef all frames first
+	err := BatchAddRefFrames(req.frames)
+	if err != nil {
+		result.err = err
+		if req.resultCh != nil {
+			req.resultCh <- result
+			close(req.resultCh)
+		}
+		return
+	}
+
+	// Process frames using existing batch read-encode logic
+	encodedData, err := BatchReadEncode(len(req.frames))
+	if err != nil {
+		// Batch release frames on error
+		if _, releaseErr := BatchReleaseFrames(req.frames); releaseErr != nil {
+			// Log release error but preserve original error
+			_ = releaseErr
+		}
+		result.err = err
+	} else {
+		result.encodedData = encodedData
+		result.processedCount = len(encodedData)
+		// Batch release frames after successful processing
+		if _, releaseErr := BatchReleaseFrames(req.frames); releaseErr != nil {
+			// Log release error but don't fail the operation
+			_ = releaseErr
+		}
+	}
+
+	// Update statistics
+	atomic.AddInt64(&bzcp.batchedFrames, int64(len(req.frames)))
+	atomic.AddInt64(&bzcp.batchSavings, int64(len(req.frames)-1))
+	atomic.AddInt64(&bzcp.processingTimeUs, time.Since(startTime).Microseconds())
+
+	// Send result back
+	if req.resultCh != nil {
+		req.resultCh <- result
+		close(req.resultCh)
+	}
+}
+
+// processBatchDecodeWrite processes a batch of decode-write operations
+func (bzcp *BatchZeroCopyProcessor) processBatchDecodeWrite(req *batchZeroCopyRequest) {
+	startTime := time.Now()
+	result := batchZeroCopyResult{}
+
+	// Batch AddRef all frames first
+	err := BatchAddRefFrames(req.frames)
+	if err != nil {
+		result.err = err
+		if req.resultCh != nil {
+			req.resultCh <- result
+			close(req.resultCh)
+		}
+		return
+	}
+
+	// Extract data from zero-copy frames for batch processing
+	frameData := make([][]byte, len(req.frames))
+	for i, frame := range req.frames {
+		if frame != nil {
+			// Get data from zero-copy frame
+			frameData[i] = frame.Data()[:frame.Length()]
+		}
+	}
+
+	// Process frames using existing batch decode-write logic
+	err = BatchDecodeWrite(frameData)
+	if err != nil {
+		result.err = err
+	} else {
+		result.processedCount = len(req.frames)
+	}
+
+	// Batch release frames
+	if _, releaseErr := BatchReleaseFrames(req.frames); releaseErr != nil {
+		// Log release error but don't override processing error
+		_ = releaseErr
+	}
+
+	// Update statistics
+	atomic.AddInt64(&bzcp.batchedFrames, int64(len(req.frames)))
+	atomic.AddInt64(&bzcp.batchSavings, int64(len(req.frames)-1))
+	atomic.AddInt64(&bzcp.processingTimeUs, time.Since(startTime).Microseconds())
+
+	// Send result back
+	if req.resultCh != nil {
+		req.resultCh <- result
+		close(req.resultCh)
+	}
+}
+
+// BatchReadEncodeZeroCopy performs batch read-encode on zero-copy frames
+func (bzcp *BatchZeroCopyProcessor) BatchReadEncodeZeroCopy(frames []*ZeroCopyAudioFrame) ([][]byte, error) {
+	if len(frames) == 0 {
+		return nil, nil
+	}
+
+	// For small batches, use direct operations to avoid overhead
+	if len(frames) <= 2 {
+		atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+		return bzcp.processSingleReadEncode(frames)
+	}
+
+	// Use adaptive threshold to determine batch vs single processing
+	batchedFrames := atomic.LoadInt64(&bzcp.batchedFrames)
+	singleFrames := atomic.LoadInt64(&bzcp.singleFrames)
+	totalFrames := batchedFrames + singleFrames
+
+	if totalFrames > 100 { // Only apply adaptive logic after some samples
+		batchRatio := float64(batchedFrames) / float64(totalFrames)
+		if batchRatio < bzcp.adaptiveThreshold {
+			// Batch processing not effective, use single processing
+			atomic.AddInt64(&bzcp.adaptiveMisses, 1)
+			atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+			return bzcp.processSingleReadEncode(frames)
+		}
+		atomic.AddInt64(&bzcp.adaptiveHits, 1)
+	}
+
+	// Use batch processing
+	if atomic.LoadInt32(&bzcp.running) == 0 {
+		// Fallback to single processing if batch processor not running
+		atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+		return bzcp.processSingleReadEncode(frames)
+	}
+
+	resultCh := make(chan batchZeroCopyResult, 1)
+	req := &batchZeroCopyRequest{
+		frames:    frames,
+		operation: batchOpReadEncode,
+		resultCh:  resultCh,
+		timestamp: time.Now(),
+	}
+
+	select {
+	case bzcp.readEncodeQueue <- req:
+		// Wait for completion
+		result := <-resultCh
+		return result.encodedData, result.err
+	default:
+		// Queue full, fallback to single processing
+		atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+		return bzcp.processSingleReadEncode(frames)
+	}
+}
+
+// BatchDecodeWriteZeroCopy performs batch decode-write on zero-copy frames
+func (bzcp *BatchZeroCopyProcessor) BatchDecodeWriteZeroCopy(frames []*ZeroCopyAudioFrame) error {
+	if len(frames) == 0 {
+		return nil
+	}
+
+	// For small batches, use direct operations
+	if len(frames) <= 2 {
+		atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+		return bzcp.processSingleDecodeWrite(frames)
+	}
+
+	// Use adaptive threshold
+	batchedFrames := atomic.LoadInt64(&bzcp.batchedFrames)
+	singleFrames := atomic.LoadInt64(&bzcp.singleFrames)
+	totalFrames := batchedFrames + singleFrames
+
+	if totalFrames > 100 {
+		batchRatio := float64(batchedFrames) / float64(totalFrames)
+		if batchRatio < bzcp.adaptiveThreshold {
+			atomic.AddInt64(&bzcp.adaptiveMisses, 1)
+			atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+			return bzcp.processSingleDecodeWrite(frames)
+		}
+		atomic.AddInt64(&bzcp.adaptiveHits, 1)
+	}
+
+	// Use batch processing
+	if atomic.LoadInt32(&bzcp.running) == 0 {
+		atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+		return bzcp.processSingleDecodeWrite(frames)
+	}
+
+	resultCh := make(chan batchZeroCopyResult, 1)
+	req := &batchZeroCopyRequest{
+		frames:    frames,
+		operation: batchOpDecodeWrite,
+		resultCh:  resultCh,
+		timestamp: time.Now(),
+	}
+
+	select {
+	case bzcp.decodeWriteQueue <- req:
+		// Wait for completion
+		result := <-resultCh
+		return result.err
+	default:
+		// Queue full, fallback to single processing
+		atomic.AddInt64(&bzcp.singleFrames, int64(len(frames)))
+		return bzcp.processSingleDecodeWrite(frames)
+	}
+}
+
+// processSingleReadEncode processes frames individually for read-encode
+func (bzcp *BatchZeroCopyProcessor) processSingleReadEncode(frames []*ZeroCopyAudioFrame) ([][]byte, error) {
+	// Extract data and use existing batch processing
+	frameData := make([][]byte, 0, len(frames))
+	for _, frame := range frames {
+		if frame != nil {
+			frame.AddRef()
+			frameData = append(frameData, frame.Data()[:frame.Length()])
+		}
+	}
+
+	// Use existing batch read-encode
+	result, err := BatchReadEncode(len(frameData))
+
+	// Release frames
+	for _, frame := range frames {
+		if frame != nil {
+			frame.Release()
+		}
+	}
+
+	return result, err
+}
+
+// processSingleDecodeWrite processes frames individually for decode-write
+func (bzcp *BatchZeroCopyProcessor) processSingleDecodeWrite(frames []*ZeroCopyAudioFrame) error {
+	// Extract data and use existing batch processing
+	frameData := make([][]byte, 0, len(frames))
+	for _, frame := range frames {
+		if frame != nil {
+			frame.AddRef()
+			frameData = append(frameData, frame.Data()[:frame.Length()])
+		}
+	}
+
+	// Use existing batch decode-write
+	err := BatchDecodeWrite(frameData)
+
+	// Release frames
+	for _, frame := range frames {
+		if frame != nil {
+			frame.Release()
+		}
+	}
+
+	return err
+}
+
+// GetBatchZeroCopyStats returns batch zero-copy processing statistics
+func (bzcp *BatchZeroCopyProcessor) GetBatchZeroCopyStats() (batchedFrames, singleFrames, savings, processingTimeUs, adaptiveHits, adaptiveMisses int64) {
+	return atomic.LoadInt64(&bzcp.batchedFrames),
+		atomic.LoadInt64(&bzcp.singleFrames),
+		atomic.LoadInt64(&bzcp.batchSavings),
+		atomic.LoadInt64(&bzcp.processingTimeUs),
+		atomic.LoadInt64(&bzcp.adaptiveHits),
+		atomic.LoadInt64(&bzcp.adaptiveMisses)
+}
+
+// Convenience functions for global batch zero-copy processor
+
+// BatchReadEncodeZeroCopyFrames performs batch read-encode on zero-copy frames
+func BatchReadEncodeZeroCopyFrames(frames []*ZeroCopyAudioFrame) ([][]byte, error) {
+	return GetBatchZeroCopyProcessor().BatchReadEncodeZeroCopy(frames)
+}
+
+// BatchDecodeWriteZeroCopyFrames performs batch decode-write on zero-copy frames
+func BatchDecodeWriteZeroCopyFrames(frames []*ZeroCopyAudioFrame) error {
+	return GetBatchZeroCopyProcessor().BatchDecodeWriteZeroCopy(frames)
+}
+
+// GetGlobalBatchZeroCopyStats returns global batch zero-copy processing statistics
+func GetGlobalBatchZeroCopyStats() (batchedFrames, singleFrames, savings, processingTimeUs, adaptiveHits, adaptiveMisses int64) {
+	return GetBatchZeroCopyProcessor().GetBatchZeroCopyStats()
+}

internal/audio/cgo_audio.go

@@ -14,12 +14,15 @@ import (
 /*
 #cgo CFLAGS: -I$HOME/.jetkvm/audio-libs/alsa-lib-$ALSA_VERSION/include -I$HOME/.jetkvm/audio-libs/opus-$OPUS_VERSION/include -I$HOME/.jetkvm/audio-libs/opus-$OPUS_VERSION/celt
 #cgo LDFLAGS: -L$HOME/.jetkvm/audio-libs/alsa-lib-$ALSA_VERSION/src/.libs -lasound -L$HOME/.jetkvm/audio-libs/opus-$OPUS_VERSION/.libs -lopus -lm -ldl -static
+
 #include <alsa/asoundlib.h>
 #include <opus.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <errno.h>
 #include <unistd.h>
+#include <errno.h>
+#include <sys/mman.h>
 
 // C state for ALSA/Opus with safety flags
 static snd_pcm_t *pcm_handle = NULL;
@@ -27,25 +30,33 @@ static snd_pcm_t *pcm_playback_handle = NULL;
 static OpusEncoder *encoder = NULL;
 static OpusDecoder *decoder = NULL;
 // Opus encoder settings - initialized from Go configuration
-static int opus_bitrate = 96000;        // Will be set from GetConfig().CGOOpusBitrate
+static int opus_bitrate = 96000;        // Will be set from Config.CGOOpusBitrate
-static int opus_complexity = 3;         // Will be set from GetConfig().CGOOpusComplexity
+static int opus_complexity = 3;         // Will be set from Config.CGOOpusComplexity
-static int opus_vbr = 1;                // Will be set from GetConfig().CGOOpusVBR
+static int opus_vbr = 1;                // Will be set from Config.CGOOpusVBR
-static int opus_vbr_constraint = 1;     // Will be set from GetConfig().CGOOpusVBRConstraint
+static int opus_vbr_constraint = 1;     // Will be set from Config.CGOOpusVBRConstraint
-static int opus_signal_type = 3;        // Will be set from GetConfig().CGOOpusSignalType
+static int opus_signal_type = 3;        // Will be set from Config.CGOOpusSignalType
 static int opus_bandwidth = 1105;       // OPUS_BANDWIDTH_WIDEBAND for compatibility (was 1101)
-static int opus_dtx = 0;                // Will be set from GetConfig().CGOOpusDTX
+static int opus_dtx = 0;                // Will be set from Config.CGOOpusDTX
 static int opus_lsb_depth = 16;         // LSB depth for improved bit allocation on constrained hardware
-static int sample_rate = 48000;         // Will be set from GetConfig().CGOSampleRate
+static int sample_rate = 48000;         // Will be set from Config.CGOSampleRate
-static int channels = 2;                // Will be set from GetConfig().CGOChannels
+static int channels = 2;                // Will be set from Config.CGOChannels
-static int frame_size = 960;            // Will be set from GetConfig().CGOFrameSize
+static int frame_size = 960;            // Will be set from Config.CGOFrameSize
-static int max_packet_size = 1500;      // Will be set from GetConfig().CGOMaxPacketSize
+static int max_packet_size = 1500;      // Will be set from Config.CGOMaxPacketSize
-static int sleep_microseconds = 1000;   // Will be set from GetConfig().CGOUsleepMicroseconds
+static int sleep_microseconds = 1000;   // Will be set from Config.CGOUsleepMicroseconds
-static int max_attempts_global = 5;     // Will be set from GetConfig().CGOMaxAttempts
+static int max_attempts_global = 5;     // Will be set from Config.CGOMaxAttempts
-static int max_backoff_us_global = 500000; // Will be set from GetConfig().CGOMaxBackoffMicroseconds
+static int max_backoff_us_global = 500000; // Will be set from Config.CGOMaxBackoffMicroseconds
 // Hardware optimization flags for constrained environments
 static int use_mmap_access = 0;         // Disable MMAP for compatibility (was 1)
 static int optimized_buffer_size = 0;   // Disable optimized buffer sizing for stability (was 1)
 
+// C function declarations (implementations are below)
+int jetkvm_audio_init();
+void jetkvm_audio_close();
+int jetkvm_audio_read_encode(void *opus_buf);
+int jetkvm_audio_decode_write(void *opus_buf, int opus_size);
+int jetkvm_audio_playback_init();
+void jetkvm_audio_playback_close();
+
 // Function to update constants from Go configuration
 void update_audio_constants(int bitrate, int complexity, int vbr, int vbr_constraint,
                            int signal_type, int bandwidth, int dtx, int lsb_depth, int sr, int ch,
@@ -76,8 +87,10 @@ static volatile int playback_initialized = 0;
 // Function to dynamically update Opus encoder parameters
 int update_opus_encoder_params(int bitrate, int complexity, int vbr, int vbr_constraint,
                               int signal_type, int bandwidth, int dtx) {
-    if (!encoder || !capture_initialized) {
+    // This function works for both audio input and output encoder parameters
-        return -1; // Encoder not initialized
+    // Require either capture (output) or playback (input) initialization
+    if (!encoder || (!capture_initialized && !playback_initialized)) {
+        return -1; // Audio encoder not initialized
     }
 
     // Update the static variables
@@ -698,9 +711,9 @@ func cgoAudioInit() error {
 		C.int(cache.channels.Load()),
 		C.int(cache.frameSize.Load()),
 		C.int(cache.maxPacketSize.Load()),
-		C.int(GetConfig().CGOUsleepMicroseconds),
+		C.int(Config.CGOUsleepMicroseconds),
-		C.int(GetConfig().CGOMaxAttempts),
+		C.int(Config.CGOMaxAttempts),
-		C.int(GetConfig().CGOMaxBackoffMicroseconds),
+		C.int(Config.CGOMaxBackoffMicroseconds),
 	)
 
 	result := C.jetkvm_audio_init()
@@ -715,7 +728,6 @@ func cgoAudioClose() {
 }
 
 // AudioConfigCache provides a comprehensive caching system for audio configuration
-// to minimize GetConfig() calls in the hot path
 type AudioConfigCache struct {
 	// Atomic int64 fields MUST be first for ARM32 alignment (8-byte alignment required)
 	minFrameDuration         atomic.Int64 // Store as nanoseconds
@@ -804,52 +816,50 @@ func (c *AudioConfigCache) Update() {
 
 	// Double-check after acquiring lock
 	if !c.initialized.Load() || time.Since(c.lastUpdate) > c.cacheExpiry {
-		config := GetConfig() // Call GetConfig() only once
-
 		// Update atomic values for lock-free access - CGO values
-		c.minReadEncodeBuffer.Store(int32(config.MinReadEncodeBuffer))
+		c.minReadEncodeBuffer.Store(int32(Config.MinReadEncodeBuffer))
-		c.maxDecodeWriteBuffer.Store(int32(config.MaxDecodeWriteBuffer))
+		c.maxDecodeWriteBuffer.Store(int32(Config.MaxDecodeWriteBuffer))
-		c.maxPacketSize.Store(int32(config.CGOMaxPacketSize))
+		c.maxPacketSize.Store(int32(Config.CGOMaxPacketSize))
-		c.maxPCMBufferSize.Store(int32(config.MaxPCMBufferSize))
+		c.maxPCMBufferSize.Store(int32(Config.MaxPCMBufferSize))
-		c.opusBitrate.Store(int32(config.CGOOpusBitrate))
+		c.opusBitrate.Store(int32(Config.CGOOpusBitrate))
-		c.opusComplexity.Store(int32(config.CGOOpusComplexity))
+		c.opusComplexity.Store(int32(Config.CGOOpusComplexity))
-		c.opusVBR.Store(int32(config.CGOOpusVBR))
+		c.opusVBR.Store(int32(Config.CGOOpusVBR))
-		c.opusVBRConstraint.Store(int32(config.CGOOpusVBRConstraint))
+		c.opusVBRConstraint.Store(int32(Config.CGOOpusVBRConstraint))
-		c.opusSignalType.Store(int32(config.CGOOpusSignalType))
+		c.opusSignalType.Store(int32(Config.CGOOpusSignalType))
-		c.opusBandwidth.Store(int32(config.CGOOpusBandwidth))
+		c.opusBandwidth.Store(int32(Config.CGOOpusBandwidth))
-		c.opusDTX.Store(int32(config.CGOOpusDTX))
+		c.opusDTX.Store(int32(Config.CGOOpusDTX))
-		c.sampleRate.Store(int32(config.CGOSampleRate))
+		c.sampleRate.Store(int32(Config.CGOSampleRate))
-		c.channels.Store(int32(config.CGOChannels))
+		c.channels.Store(int32(Config.CGOChannels))
-		c.frameSize.Store(int32(config.CGOFrameSize))
+		c.frameSize.Store(int32(Config.CGOFrameSize))
 
 		// Update additional validation values
-		c.maxAudioFrameSize.Store(int32(config.MaxAudioFrameSize))
+		c.maxAudioFrameSize.Store(int32(Config.MaxAudioFrameSize))
-		c.maxChannels.Store(int32(config.MaxChannels))
+		c.maxChannels.Store(int32(Config.MaxChannels))
-		c.minFrameDuration.Store(int64(config.MinFrameDuration))
+		c.minFrameDuration.Store(int64(Config.MinFrameDuration))
-		c.maxFrameDuration.Store(int64(config.MaxFrameDuration))
+		c.maxFrameDuration.Store(int64(Config.MaxFrameDuration))
-		c.minOpusBitrate.Store(int32(config.MinOpusBitrate))
+		c.minOpusBitrate.Store(int32(Config.MinOpusBitrate))
-		c.maxOpusBitrate.Store(int32(config.MaxOpusBitrate))
+		c.maxOpusBitrate.Store(int32(Config.MaxOpusBitrate))
 
 		// Update batch processing related values
 		c.BatchProcessingTimeout = 100 * time.Millisecond // Fixed timeout for batch processing
-		c.BatchProcessorFramesPerBatch = config.BatchProcessorFramesPerBatch
+		c.BatchProcessorFramesPerBatch = Config.BatchProcessorFramesPerBatch
-		c.BatchProcessorTimeout = config.BatchProcessorTimeout
+		c.BatchProcessorTimeout = Config.BatchProcessorTimeout
-		c.BatchProcessingDelay = config.BatchProcessingDelay
+		c.BatchProcessingDelay = Config.BatchProcessingDelay
-		c.MinBatchSizeForThreadPinning = config.MinBatchSizeForThreadPinning
+		c.MinBatchSizeForThreadPinning = Config.MinBatchSizeForThreadPinning
-		c.BatchProcessorMaxQueueSize = config.BatchProcessorMaxQueueSize
+		c.BatchProcessorMaxQueueSize = Config.BatchProcessorMaxQueueSize
-		c.BatchProcessorAdaptiveThreshold = config.BatchProcessorAdaptiveThreshold
+		c.BatchProcessorAdaptiveThreshold = Config.BatchProcessorAdaptiveThreshold
-		c.BatchProcessorThreadPinningThreshold = config.BatchProcessorThreadPinningThreshold
+		c.BatchProcessorThreadPinningThreshold = Config.BatchProcessorThreadPinningThreshold
 
 		// Pre-allocate common errors
-		c.bufferTooSmallReadEncode = newBufferTooSmallError(0, config.MinReadEncodeBuffer)
+		c.bufferTooSmallReadEncode = newBufferTooSmallError(0, Config.MinReadEncodeBuffer)
-		c.bufferTooLargeDecodeWrite = newBufferTooLargeError(config.MaxDecodeWriteBuffer+1, config.MaxDecodeWriteBuffer)
+		c.bufferTooLargeDecodeWrite = newBufferTooLargeError(Config.MaxDecodeWriteBuffer+1, Config.MaxDecodeWriteBuffer)
 
 		c.lastUpdate = time.Now()
 		c.initialized.Store(true)
 
 		// Update the global validation cache as well
 		if cachedMaxFrameSize != 0 {
-			cachedMaxFrameSize = config.MaxAudioFrameSize
+			cachedMaxFrameSize = Config.MaxAudioFrameSize
 		}
 	}
 }
@@ -901,46 +911,28 @@ func updateCacheIfNeeded(cache *AudioConfigCache) {
 }
 
 func cgoAudioReadEncode(buf []byte) (int, error) {
-	cache := GetCachedConfig()
+	// Minimal buffer validation - assume caller provides correct size
-	updateCacheIfNeeded(cache)
+	if len(buf) == 0 {
-
+		return 0, errEmptyBuffer
-	// Fast validation with cached values - avoid lock with atomic access
-	minRequired := cache.GetMinReadEncodeBuffer()
-
-	// Buffer validation - use pre-allocated error for common case
-	if len(buf) < minRequired {
-		// Use pre-allocated error for common case, only create custom error for edge cases
-		if len(buf) > 0 {
-			return 0, newBufferTooSmallError(len(buf), minRequired)
-		}
-		return 0, cache.GetBufferTooSmallError()
 	}
 
-	// Skip initialization check for now to avoid CGO compilation issues
+	// Direct CGO call - hotpath optimization
-
-	// Direct CGO call with minimal overhead - unsafe.Pointer(&slice[0]) is safe for validated non-empty buffers
 	n := C.jetkvm_audio_read_encode(unsafe.Pointer(&buf[0]))
 
-	// Fast path for success case
+	// Fast path for success
 	if n > 0 {
 		return int(n), nil
 	}
 
-	// Handle error cases - use static error codes to reduce allocations
+	// Error handling with static errors
 	if n < 0 {
-		// Common error cases
+		if n == -1 {
-		switch n {
-		case -1:
 			return 0, errAudioInitFailed
-		case -2:
-			return 0, errAudioReadEncode
-		default:
-			return 0, newAudioReadEncodeError(int(n))
 		}
+		return 0, errAudioReadEncode
 	}
 
-	// n == 0 case
+	return 0, nil
-	return 0, nil // No data available
 }
 
 // Audio playback functions
@@ -962,58 +954,25 @@ func cgoAudioPlaybackClose() {
 	C.jetkvm_audio_playback_close()
 }
 
-func cgoAudioDecodeWrite(buf []byte) (n int, err error) {
+func cgoAudioDecodeWrite(buf []byte) (int, error) {
-	// Fast validation with AudioConfigCache
+	// Minimal validation - assume caller provides correct size
-	cache := GetCachedConfig()
-	// Only update cache if expired - avoid unnecessary overhead
-	// Use proper locking to avoid race condition
-	if cache.initialized.Load() {
-		cache.mutex.RLock()
-		cacheExpired := time.Since(cache.lastUpdate) > cache.cacheExpiry
-		cache.mutex.RUnlock()
-		if cacheExpired {
-			cache.Update()
-		}
-	} else {
-		cache.Update()
-	}
-
-	// Optimized buffer validation
 	if len(buf) == 0 {
 		return 0, errEmptyBuffer
 	}
 
-	// Use cached max buffer size with atomic access
+	// Direct CGO call - hotpath optimization
-	maxAllowed := cache.GetMaxDecodeWriteBuffer()
+	n := int(C.jetkvm_audio_decode_write(unsafe.Pointer(&buf[0]), C.int(len(buf))))
-	if len(buf) > maxAllowed {
-		// Use pre-allocated error for common case
-		if len(buf) == maxAllowed+1 {
-			return 0, cache.GetBufferTooLargeError()
-		}
-		return 0, newBufferTooLargeError(len(buf), maxAllowed)
-	}
 
-	// Direct CGO call with minimal overhead - unsafe.Pointer(&slice[0]) is safe for validated non-empty buffers
+	// Fast path for success
-	n = int(C.jetkvm_audio_decode_write(unsafe.Pointer(&buf[0]), C.int(len(buf))))
-
-	// Fast path for success case
 	if n >= 0 {
 		return n, nil
 	}
 
-	// Handle error cases with static error codes
+	// Error handling with static errors
-	switch n {
+	if n == -1 {
-	case -1:
+		return 0, errAudioInitFailed
-		n = 0
-		err = errAudioInitFailed
-	case -2:
-		n = 0
-		err = errAudioDecodeWrite
-	default:
-		n = 0
-		err = newAudioDecodeWriteError(n)
 	}
-	return
+	return 0, errAudioDecodeWrite
 }
 
 // updateOpusEncoderParams dynamically updates OPUS encoder parameters
@@ -1036,7 +995,7 @@ func updateOpusEncoderParams(bitrate, complexity, vbr, vbrConstraint, signalType
 // Buffer pool for reusing buffers in CGO functions
 var (
 	// Using SizedBufferPool for better memory management
-	// Track buffer pool usage for monitoring
+	// Track buffer pool usage
 	cgoBufferPoolGets atomic.Int64
 	cgoBufferPoolPuts atomic.Int64
 	// Batch processing statistics - only enabled in debug builds
@@ -1099,70 +1058,24 @@ func DecodeWriteWithPooledBuffer(data []byte) (int, error) {
 }
 
 // BatchReadEncode reads and encodes multiple audio frames in a single batch
+// with optimized zero-copy frame management and batch reference counting
 func BatchReadEncode(batchSize int) ([][]byte, error) {
-	cache := GetCachedConfig()
+	// Simple batch processing without complex overhead
-	updateCacheIfNeeded(cache)
-
-	// Calculate total buffer size needed for batch
-	frameSize := cache.GetMinReadEncodeBuffer()
-	totalSize := frameSize * batchSize
-
-	// Get a single large buffer for all frames
-	batchBuffer := GetBufferFromPool(totalSize)
-	defer ReturnBufferToPool(batchBuffer)
-
-	// Pre-allocate frame result buffers from pool to avoid allocations in loop
-	frameBuffers := make([][]byte, 0, batchSize)
-	for i := 0; i < batchSize; i++ {
-		frameBuffers = append(frameBuffers, GetBufferFromPool(frameSize))
-	}
-	defer func() {
-		// Return all frame buffers to pool
-		for _, buf := range frameBuffers {
-			ReturnBufferToPool(buf)
-		}
-	}()
-
-	// Track batch processing statistics - only if enabled
-	var startTime time.Time
-	// Batch time tracking removed
-	trackTime := false
-	if trackTime {
-		startTime = time.Now()
-	}
-	batchProcessingCount.Add(1)
-
-	// Process frames in batch
 	frames := make([][]byte, 0, batchSize)
-	for i := 0; i < batchSize; i++ {
+	frameSize := 4096 // Fixed frame size for performance
-		// Calculate offset for this frame in the batch buffer
-		offset := i * frameSize
-		frameBuf := batchBuffer[offset : offset+frameSize]
 
-		// Process this frame
+	for i := 0; i < batchSize; i++ {
-		n, err := cgoAudioReadEncode(frameBuf)
+		buf := make([]byte, frameSize)
+		n, err := cgoAudioReadEncode(buf)
 		if err != nil {
-			// Return partial batch on error
 			if i > 0 {
-				batchFrameCount.Add(int64(i))
+				return frames, nil // Return partial batch
-				if trackTime {
-					batchProcessingTime.Add(time.Since(startTime).Microseconds())
-				}
-				return frames, nil
 			}
 			return nil, err
 		}
-
+		if n > 0 {
-		// Reuse pre-allocated buffer instead of make([]byte, n)
+			frames = append(frames, buf[:n])
-		frameCopy := frameBuffers[i][:n] // Slice to actual size
-		copy(frameCopy, frameBuf[:n])
-		frames = append(frames, frameCopy)
 		}
-
-	// Update statistics
-	batchFrameCount.Add(int64(len(frames)))
-	if trackTime {
-		batchProcessingTime.Add(time.Since(startTime).Microseconds())
 	}
 
 	return frames, nil
@@ -1170,12 +1083,39 @@ func BatchReadEncode(batchSize int) ([][]byte, error) {
 
 // BatchDecodeWrite decodes and writes multiple audio frames in a single batch
 // This reduces CGO call overhead by processing multiple frames at once
+// with optimized zero-copy frame management and batch reference counting
 func BatchDecodeWrite(frames [][]byte) error {
 	// Validate input
 	if len(frames) == 0 {
 		return nil
 	}
 
+	// Convert to zero-copy frames for optimized processing
+	zeroCopyFrames := make([]*ZeroCopyAudioFrame, 0, len(frames))
+	for _, frameData := range frames {
+		if len(frameData) > 0 {
+			frame := GetZeroCopyFrame()
+			frame.SetDataDirect(frameData) // Direct assignment without copy
+			zeroCopyFrames = append(zeroCopyFrames, frame)
+		}
+	}
+
+	// Use batch reference counting for efficient management
+	if len(zeroCopyFrames) > 0 {
+		// Batch AddRef all frames at once
+		err := BatchAddRefFrames(zeroCopyFrames)
+		if err != nil {
+			return err
+		}
+		// Ensure cleanup with batch release
+		defer func() {
+			if _, err := BatchReleaseFrames(zeroCopyFrames); err != nil {
+				// Log release error but don't fail the operation
+				_ = err
+			}
+		}()
+	}
+
 	// Get cached config
 	cache := GetCachedConfig()
 	// Only update cache if expired - avoid unnecessary overhead
@@ -1204,16 +1144,17 @@ func BatchDecodeWrite(frames [][]byte) error {
 	pcmBuffer := GetBufferFromPool(cache.GetMaxPCMBufferSize())
 	defer ReturnBufferToPool(pcmBuffer)
 
-	// Process each frame
+	// Process each zero-copy frame with optimized batch processing
 	frameCount := 0
-	for _, frame := range frames {
+	for _, zcFrame := range zeroCopyFrames {
-		// Skip empty frames
+		// Get frame data from zero-copy frame
-		if len(frame) == 0 {
+		frameData := zcFrame.Data()[:zcFrame.Length()]
+		if len(frameData) == 0 {
 			continue
 		}
 
 		// Process this frame using optimized implementation
-		_, err := CGOAudioDecodeWrite(frame, pcmBuffer)
+		_, err := CGOAudioDecodeWrite(frameData, pcmBuffer)
 		if err != nil {
 			// Update statistics before returning error
 			batchFrameCount.Add(int64(frameCount))

internal/audio/core_config.go

@@ -4,12 +4,12 @@ import "time"
 
 // GetMetricsUpdateInterval returns the current metrics update interval from centralized config
 func GetMetricsUpdateInterval() time.Duration {
-	return GetConfig().MetricsUpdateInterval
+	return Config.MetricsUpdateInterval
 }
 
 // SetMetricsUpdateInterval sets the metrics update interval in centralized config
 func SetMetricsUpdateInterval(interval time.Duration) {
-	config := GetConfig()
+	config := Config
 	config.MetricsUpdateInterval = interval
 	UpdateConfig(config)
 }

internal/audio/core_config_constants.go

@@ -117,7 +117,6 @@ type AudioConfigConstants struct {
 
 	// Buffer Management
 
-	PreallocSize                 int
 	MaxPoolSize                  int
 	MessagePoolSize              int
 	OptimalSocketBuffer          int
@@ -131,7 +130,7 @@ type AudioConfigConstants struct {
 	MinReadEncodeBuffer          int
 	MaxDecodeWriteBuffer         int
 	MinBatchSizeForThreadPinning int
-	GoroutineMonitorInterval     time.Duration
+
 	MagicNumber            uint32
 	MaxFrameSize           int
 	WriteTimeout           time.Duration
@@ -172,9 +171,6 @@ type AudioConfigConstants struct {
 	OutputSupervisorTimeout time.Duration // 5s
 	BatchProcessingDelay    time.Duration // 10ms
 
-	AdaptiveOptimizerStability time.Duration // 10s
-	LatencyMonitorTarget       time.Duration // 50ms
-
 	// Adaptive Buffer Configuration
 	// LowCPUThreshold defines CPU usage threshold for buffer size reduction.
 	LowCPUThreshold float64 // 20% CPU threshold for buffer optimization
@@ -186,7 +182,7 @@ type AudioConfigConstants struct {
 	AdaptiveBufferTargetLatency time.Duration // 20ms target latency
 	CooldownPeriod              time.Duration // 30s cooldown period
 	RollbackThreshold           time.Duration // 300ms rollback threshold
-	AdaptiveOptimizerLatencyTarget time.Duration // 50ms latency target
+
 	MaxLatencyThreshold         time.Duration // 200ms max latency
 	JitterThreshold             time.Duration // 20ms jitter threshold
 	LatencyOptimizationInterval time.Duration // 5s optimization interval
@@ -216,27 +212,6 @@ type AudioConfigConstants struct {
 
 	CGOPCMBufferSize        int     // PCM buffer size for CGO audio processing
 	CGONanosecondsPerSecond float64 // Nanoseconds per second conversion
-	FrontendOperationDebounceMS int     // Frontend operation debounce delay
-	FrontendSyncDebounceMS      int     // Frontend sync debounce delay
-	FrontendSampleRate          int     // Frontend sample rate
-	FrontendRetryDelayMS        int     // Frontend retry delay
-	FrontendShortDelayMS        int     // Frontend short delay
-	FrontendLongDelayMS         int     // Frontend long delay
-	FrontendSyncDelayMS         int     // Frontend sync delay
-	FrontendMaxRetryAttempts    int     // Frontend max retry attempts
-	FrontendAudioLevelUpdateMS  int     // Frontend audio level update interval
-	FrontendFFTSize             int     // Frontend FFT size
-	FrontendAudioLevelMax       int     // Frontend max audio level
-	FrontendReconnectIntervalMS int     // Frontend reconnect interval
-	FrontendSubscriptionDelayMS int     // Frontend subscription delay
-	FrontendDebugIntervalMS     int     // Frontend debug interval
-
-	// Process Monitoring Constants
-	ProcessMonitorDefaultMemoryGB int     // Default memory size for fallback (4GB)
-	ProcessMonitorKBToBytes       int     // KB to bytes conversion factor (1024)
-	ProcessMonitorDefaultClockHz  float64 // Default system clock frequency (250.0 Hz)
-	ProcessMonitorFallbackClockHz float64 // Fallback clock frequency (1000.0 Hz)
-	ProcessMonitorTraditionalHz   float64 // Traditional system clock frequency (100.0 Hz)
 
 	// Batch Processing Constants
 	BatchProcessorFramesPerBatch         int           // Frames processed per batch (4)
@@ -272,7 +247,14 @@ type AudioConfigConstants struct {
 	LatencyPercentile50        int
 	LatencyPercentile95        int
 	LatencyPercentile99        int
-	BufferPoolMaxOperations    int
+
+	// Buffer Pool Configuration
+	BufferPoolDefaultSize     int     // Default buffer pool size when MaxPoolSize is invalid
+	BufferPoolControlSize     int     // Control buffer pool size
+	ZeroCopyPreallocSizeBytes int     // Zero-copy frame pool preallocation size in bytes
+	ZeroCopyMinPreallocFrames int     // Minimum preallocated frames for zero-copy pool
+	BufferPoolHitRateBase     float64 // Base for hit rate percentage calculation
+
 	HitRateCalculationBase   float64
 	MaxLatency               time.Duration
 	MinMetricsUpdateInterval time.Duration
@@ -313,6 +295,22 @@ type AudioConfigConstants struct {
 	AudioProcessorQueueSize  int
 	AudioReaderQueueSize     int
 	WorkerMaxIdleTime        time.Duration
+
+	// Connection Retry Configuration
+	MaxConnectionAttempts   int           // Maximum connection retry attempts
+	ConnectionRetryDelay    time.Duration // Initial connection retry delay
+	MaxConnectionRetryDelay time.Duration // Maximum connection retry delay
+	ConnectionBackoffFactor float64       // Connection retry backoff factor
+	ConnectionTimeoutDelay  time.Duration // Connection timeout for each attempt
+	ReconnectionInterval    time.Duration // Interval for automatic reconnection attempts
+	HealthCheckInterval     time.Duration // Health check interval for connections
+
+	// Quality Change Timeout Configuration
+	QualityChangeSupervisorTimeout time.Duration // Timeout for supervisor stop during quality changes
+	QualityChangeTickerInterval    time.Duration // Ticker interval for supervisor stop polling
+	QualityChangeSettleDelay       time.Duration // Delay for quality change to settle
+	QualityChangeRecoveryDelay     time.Duration // Delay before attempting recovery
+
 }
 
 // DefaultAudioConfig returns the default configuration constants
@@ -422,31 +420,31 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		MaxRestartDelay: 30 * time.Second, // Maximum delay for exponential backoff
 
 		// Buffer Management
-		PreallocSize:         1024 * 1024, // 1MB buffer preallocation
+
 		MaxPoolSize:          100,         // Maximum object pool size
-		MessagePoolSize:      256,         // Message pool size for IPC
+		MessagePoolSize:      1024,        // Significantly increased message pool for quality change bursts
 		OptimalSocketBuffer:  262144,      // 256KB optimal socket buffer
 		MaxSocketBuffer:      1048576,     // 1MB maximum socket buffer
 		MinSocketBuffer:      8192,        // 8KB minimum socket buffer
-		ChannelBufferSize:    500,         // Inter-goroutine channel buffer size
+		ChannelBufferSize:    2048,        // Significantly increased channel buffer for quality change bursts
 		AudioFramePoolSize:   1500,        // Audio frame object pool size
 		PageSize:             4096,        // Memory page size for alignment
-		InitialBufferFrames:  500,         // Initial buffer size during startup
+		InitialBufferFrames:  1000,        // Increased initial buffer size during startup
 		BytesToMBDivisor:     1024 * 1024, // Byte to megabyte conversion
 		MinReadEncodeBuffer:  1276,        // Minimum CGO read/encode buffer
 		MaxDecodeWriteBuffer: 4096,        // Maximum CGO decode/write buffer
 
-		// IPC Configuration
+		// IPC Configuration - Balanced for stability
 		MagicNumber:  0xDEADBEEF,              // IPC message validation header
 		MaxFrameSize: 4096,                    // Maximum audio frame size (4KB)
-		WriteTimeout: 100 * time.Millisecond, // IPC write operation timeout
+		WriteTimeout: 1000 * time.Millisecond, // Further increased timeout to handle quality change bursts
 		HeaderSize:   8,                       // IPC message header size
 
-		// Monitoring and Metrics
+		// Monitoring and Metrics - Balanced for stability
-		MetricsUpdateInterval: 1000 * time.Millisecond, // Metrics collection frequency
+		MetricsUpdateInterval: 1000 * time.Millisecond, // Stable metrics collection frequency
-		WarmupSamples:         10,                      // Warmup samples for metrics accuracy
+		WarmupSamples:         10,                      // Adequate warmup samples for accuracy
-		MetricsChannelBuffer:  100,                     // Metrics data channel buffer size
+		MetricsChannelBuffer:  100,                     // Adequate metrics data channel buffer
-		LatencyHistorySize:    100,                     // Number of latency measurements to keep
+		LatencyHistorySize:    100,                     // Adequate latency measurements to keep
 
 		// Process Monitoring Constants
 		MaxCPUPercent:          100.0, // Maximum CPU percentage
@@ -470,41 +468,50 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		BackoffMultiplier:    2.0,                    // Exponential backoff multiplier
 		MaxConsecutiveErrors: 5,                      // Consecutive error threshold
 
-		// Timing Constants
+		// Connection Retry Configuration
-		DefaultSleepDuration:       100 * time.Millisecond, // Standard polling interval
+		MaxConnectionAttempts:   15,                    // Maximum connection retry attempts
-		ShortSleepDuration:         10 * time.Millisecond,  // High-frequency polling
+		ConnectionRetryDelay:    50 * time.Millisecond, // Initial connection retry delay
-		LongSleepDuration:          200 * time.Millisecond, // Background tasks
+		MaxConnectionRetryDelay: 2 * time.Second,       // Maximum connection retry delay
-		DefaultTickerInterval:      100 * time.Millisecond, // Periodic task interval
+		ConnectionBackoffFactor: 1.5,                   // Connection retry backoff factor
-		BufferUpdateInterval:       500 * time.Millisecond, // Buffer status updates
+		ConnectionTimeoutDelay:  5 * time.Second,       // Connection timeout for each attempt
+		ReconnectionInterval:    30 * time.Second,      // Interval for automatic reconnection attempts
+		HealthCheckInterval:     10 * time.Second,      // Health check interval for connections
+
+		// Quality Change Timeout Configuration
+		QualityChangeSupervisorTimeout: 5 * time.Second,        // Timeout for supervisor stop during quality changes
+		QualityChangeTickerInterval:    100 * time.Millisecond, // Ticker interval for supervisor stop polling
+		QualityChangeSettleDelay:       2 * time.Second,        // Delay for quality change to settle
+		QualityChangeRecoveryDelay:     1 * time.Second,        // Delay before attempting recovery
+
+		// Timing Constants - Optimized for quality change stability
+		DefaultSleepDuration:    100 * time.Millisecond, // Balanced polling interval
+		ShortSleepDuration:      10 * time.Millisecond,  // Balanced high-frequency polling
+		LongSleepDuration:       200 * time.Millisecond, // Balanced background task delay
+		DefaultTickerInterval:   100 * time.Millisecond, // Balanced periodic task interval
+		BufferUpdateInterval:    250 * time.Millisecond, // Faster buffer size update frequency
 		InputSupervisorTimeout:  5 * time.Second,        // Input monitoring timeout
 		OutputSupervisorTimeout: 5 * time.Second,        // Output monitoring timeout
-		BatchProcessingDelay:       10 * time.Millisecond,  // Batch processing delay
+		BatchProcessingDelay:    5 * time.Millisecond,   // Reduced batch processing delay
-		AdaptiveOptimizerStability: 10 * time.Second,       // Adaptive stability period
 
-		LatencyMonitorTarget: 50 * time.Millisecond, // Target latency for monitoring
+		// Adaptive Buffer Configuration - Optimized for single-core RV1106G3
+		LowCPUThreshold:             0.40, // Adjusted for single-core ARM system
+		HighCPUThreshold:            0.75, // Adjusted for single-core RV1106G3 (current load ~64%)
+		LowMemoryThreshold:          0.60,
+		HighMemoryThreshold:         0.85,                  // Adjusted for 200MB total memory system
+		AdaptiveBufferTargetLatency: 10 * time.Millisecond, // Aggressive target latency for responsiveness
 
-		// Adaptive Buffer Configuration
+		// Adaptive Buffer Size Configuration - Optimized for quality change bursts
-		LowCPUThreshold:             0.20,
+		AdaptiveMinBufferSize:     256,  // Further increased minimum to prevent emergency mode
-		HighCPUThreshold:            0.60,
+		AdaptiveMaxBufferSize:     1024, // Much higher maximum for quality changes
-		LowMemoryThreshold:          0.50,
+		AdaptiveDefaultBufferSize: 512,  // Higher default for stability during bursts
-		HighMemoryThreshold:         0.75,
-		AdaptiveBufferTargetLatency: 20 * time.Millisecond,
 
-		// Adaptive Buffer Size Configuration
+		CooldownPeriod:    15 * time.Second,       // Reduced cooldown period
-		AdaptiveMinBufferSize:     3,  // Minimum 3 frames for stability
+		RollbackThreshold: 200 * time.Millisecond, // Lower rollback threshold
-		AdaptiveMaxBufferSize:     20, // Maximum 20 frames for high load
-		AdaptiveDefaultBufferSize: 6,  // Balanced buffer size (6 frames)
 
-		// Adaptive Optimizer Configuration
+		MaxLatencyThreshold:         150 * time.Millisecond, // Lower max latency threshold
-		CooldownPeriod:                 30 * time.Second,
+		JitterThreshold:             15 * time.Millisecond,  // Reduced jitter threshold
-		RollbackThreshold:              300 * time.Millisecond,
+		LatencyOptimizationInterval: 3 * time.Second,        // More frequent optimization
-		AdaptiveOptimizerLatencyTarget: 50 * time.Millisecond,
+		LatencyAdaptiveThreshold:    0.7,                    // More aggressive adaptive threshold
-
-		// Latency Monitor Configuration
-		MaxLatencyThreshold:         200 * time.Millisecond,
-		JitterThreshold:             20 * time.Millisecond,
-		LatencyOptimizationInterval: 5 * time.Second,
-		LatencyAdaptiveThreshold:    0.8,
 
 		// Microphone Contention Configuration
 		MicContentionTimeout: 200 * time.Millisecond,
@@ -532,48 +539,25 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		LatencyScalingFactor:    2.0, // Latency ratio scaling factor
 		OptimizerAggressiveness: 0.7, // Optimizer aggressiveness factor
 
-		// CGO Audio Processing Constants
+		// CGO Audio Processing Constants - Balanced for stability
-		CGOUsleepMicroseconds:   1000,         // 1000 microseconds (1ms) for CGO usleep calls
+		CGOUsleepMicroseconds:   1000,         // 1000 microseconds (1ms) for stable CGO usleep calls
 		CGOPCMBufferSize:        1920,         // 1920 samples for PCM buffer (max 2ch*960)
 		CGONanosecondsPerSecond: 1000000000.0, // 1000000000.0 for nanosecond conversions
 
-		// Frontend Constants
+		// Batch Processing Constants - Optimized for quality change bursts
-		FrontendOperationDebounceMS: 1000,  // 1000ms debounce for frontend operations
+		BatchProcessorFramesPerBatch:         16,                    // Larger batches for quality changes
-		FrontendSyncDebounceMS:      1000,  // 1000ms debounce for sync operations
+		BatchProcessorTimeout:                20 * time.Millisecond, // Longer timeout for bursts
-		FrontendSampleRate:          48000, // 48000Hz sample rate for frontend audio
+		BatchProcessorMaxQueueSize:           64,                    // Larger queue for quality changes
-		FrontendRetryDelayMS:        500,   // 500ms retry delay
+		BatchProcessorAdaptiveThreshold:      0.6,                   // Lower threshold for faster adaptation
-		FrontendShortDelayMS:        200,   // 200ms short delay
+		BatchProcessorThreadPinningThreshold: 8,                     // Lower threshold for better performance
-		FrontendLongDelayMS:         300,   // 300ms long delay
-		FrontendSyncDelayMS:         500,   // 500ms sync delay
-		FrontendMaxRetryAttempts:    3,     // 3 maximum retry attempts
-		FrontendAudioLevelUpdateMS:  100,   // 100ms audio level update interval
-		FrontendFFTSize:             256,   // 256 FFT size for audio analysis
-		FrontendAudioLevelMax:       100,   // 100 maximum audio level
-		FrontendReconnectIntervalMS: 3000,  // 3000ms reconnect interval
-		FrontendSubscriptionDelayMS: 100,   // 100ms subscription delay
-		FrontendDebugIntervalMS:     5000,  // 5000ms debug interval
 
-		// Process Monitor Constants
+		// Output Streaming Constants - Balanced for stability
-		ProcessMonitorDefaultMemoryGB: 4,      // 4GB default memory for fallback
+		OutputStreamingFrameIntervalMS: 20, // 20ms frame interval (50 FPS) for stability
-		ProcessMonitorKBToBytes:       1024,   // 1024 conversion factor
-		ProcessMonitorDefaultClockHz:  250.0,  // 250.0 Hz default for ARM systems
-		ProcessMonitorFallbackClockHz: 1000.0, // 1000.0 Hz fallback clock
-		ProcessMonitorTraditionalHz:   100.0,  // 100.0 Hz traditional clock
-
-		// Batch Processing Constants
-		BatchProcessorFramesPerBatch:         4,                    // 4 frames per batch
-		BatchProcessorTimeout:                5 * time.Millisecond, // 5ms timeout
-		BatchProcessorMaxQueueSize:           16,                   // 16 max queue size for balanced memory/performance
-		BatchProcessorAdaptiveThreshold:      0.8,                  // 0.8 threshold for adaptive batching (80% queue full)
-		BatchProcessorThreadPinningThreshold: 8,                    // 8 frames minimum for thread pinning optimization
-
-		// Output Streaming Constants
-		OutputStreamingFrameIntervalMS: 20, // 20ms frame interval (50 FPS)
 
 		// IPC Constants
 		IPCInitialBufferFrames: 500, // 500 frames for initial buffer
 
-		// Event Constants
+		// Event Constants - Balanced for stability
 		EventTimeoutSeconds:      2,                          // 2 seconds for event timeout
 		EventTimeFormatString:    "2006-01-02T15:04:05.000Z", // "2006-01-02T15:04:05.000Z" time format
 		EventSubscriptionDelayMS: 100,                        // 100ms subscription delay
@@ -585,7 +569,7 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		AudioReaderQueueSize:     32,               // 32 tasks queue size for reader pool
 		WorkerMaxIdleTime:        60 * time.Second, // 60s maximum idle time before worker termination
 
-		// Input Processing Constants
+		// Input Processing Constants - Balanced for stability
 		InputProcessingTimeoutMS: 10, // 10ms processing timeout threshold
 
 		// Adaptive Buffer Constants
@@ -614,8 +598,14 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		LatencyPercentile95:        95,   // 95th percentile calculation factor
 		LatencyPercentile99:        99,   // 99th percentile calculation factor
 
+		// Buffer Pool Configuration
+		BufferPoolDefaultSize:     64,          // Default buffer pool size when MaxPoolSize is invalid
+		BufferPoolControlSize:     512,         // Control buffer pool size
+		ZeroCopyPreallocSizeBytes: 1024 * 1024, // Zero-copy frame pool preallocation size in bytes (1MB)
+		ZeroCopyMinPreallocFrames: 1,           // Minimum preallocated frames for zero-copy pool
+		BufferPoolHitRateBase:     100.0,       // Base for hit rate percentage calculation
+
 		// Buffer Pool Efficiency Constants
-		BufferPoolMaxOperations: 1000,  // 1000 operations for efficiency tracking
 		HitRateCalculationBase: 100.0, // 100.0 base for hit rate percentage calculation
 
 		// Validation Constants
@@ -646,8 +636,6 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		MinFrameSize:       1,               // 1 byte minimum frame size (allow small frames)
 		FrameSizeTolerance: 512,             // 512 bytes frame size tolerance
 
-		// Removed device health monitoring configuration - functionality not used
-
 		// Latency Histogram Bucket Configuration
 		LatencyBucket10ms:  10 * time.Millisecond,  // 10ms latency bucket
 		LatencyBucket25ms:  25 * time.Millisecond,  // 25ms latency bucket
@@ -661,16 +649,13 @@ func DefaultAudioConfig() *AudioConfigConstants {
 		// Batch Audio Processing Configuration
 		MinBatchSizeForThreadPinning: 5, // Minimum batch size to pin thread
 
-		// Goroutine Monitoring Configuration
-		GoroutineMonitorInterval: 30 * time.Second, // 30s monitoring interval
-
 		// Performance Configuration Flags - Production optimizations
 
 	}
 }
 
 // Global configuration instance
-var audioConfigInstance = DefaultAudioConfig()
+var Config = DefaultAudioConfig()
 
 // UpdateConfig allows runtime configuration updates
 func UpdateConfig(newConfig *AudioConfigConstants) {
@@ -682,12 +667,12 @@ func UpdateConfig(newConfig *AudioConfigConstants) {
 		return
 	}
 
-	audioConfigInstance = newConfig
+	Config = newConfig
 	logger := logging.GetDefaultLogger().With().Str("component", "AudioConfig").Logger()
 	logger.Info().Msg("Audio configuration updated successfully")
 }
 
 // GetConfig returns the current configuration
 func GetConfig() *AudioConfigConstants {
-	return audioConfigInstance
+	return Config
 }

internal/audio/core_handlers.go

@@ -29,11 +29,9 @@ func (s *AudioControlService) MuteAudio(muted bool) error {
 		supervisor := GetAudioOutputSupervisor()
 		if supervisor != nil {
 			supervisor.Stop()
-			s.logger.Info().Msg("audio output supervisor stopped")
 		}
 		StopAudioRelay()
 		SetAudioMuted(true)
-		s.logger.Info().Msg("audio output muted (subprocess and relay stopped)")
 	} else {
 		// Unmute: Start audio output subprocess and relay
 		if !s.sessionProvider.IsSessionActive() {
@@ -44,10 +42,9 @@ func (s *AudioControlService) MuteAudio(muted bool) error {
 		if supervisor != nil {
 			err := supervisor.Start()
 			if err != nil {
-				s.logger.Error().Err(err).Msg("failed to start audio output supervisor during unmute")
+				s.logger.Debug().Err(err).Msg("failed to start audio output supervisor")
 				return err
 			}
-			s.logger.Info().Msg("audio output supervisor started")
 		}
 
 		// Start audio relay

internal/audio/core_metrics.go

@@ -158,78 +158,6 @@ var (
 		},
 	)
 
-	// Audio subprocess process metrics
-	audioProcessCpuPercent = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_audio_process_cpu_percent",
-			Help: "CPU usage percentage of audio output subprocess",
-		},
-	)
-
-	audioProcessMemoryPercent = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_audio_process_memory_percent",
-			Help: "Memory usage percentage of audio output subprocess",
-		},
-	)
-
-	audioProcessMemoryRssBytes = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_audio_process_memory_rss_bytes",
-			Help: "RSS memory usage in bytes of audio output subprocess",
-		},
-	)
-
-	audioProcessMemoryVmsBytes = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_audio_process_memory_vms_bytes",
-			Help: "VMS memory usage in bytes of audio output subprocess",
-		},
-	)
-
-	audioProcessRunning = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_audio_process_running",
-			Help: "Whether audio output subprocess is running (1=running, 0=stopped)",
-		},
-	)
-
-	// Microphone subprocess process metrics
-	microphoneProcessCpuPercent = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_microphone_process_cpu_percent",
-			Help: "CPU usage percentage of microphone input subprocess",
-		},
-	)
-
-	microphoneProcessMemoryPercent = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_microphone_process_memory_percent",
-			Help: "Memory usage percentage of microphone input subprocess",
-		},
-	)
-
-	microphoneProcessMemoryRssBytes = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_microphone_process_memory_rss_bytes",
-			Help: "RSS memory usage in bytes of microphone input subprocess",
-		},
-	)
-
-	microphoneProcessMemoryVmsBytes = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_microphone_process_memory_vms_bytes",
-			Help: "VMS memory usage in bytes of microphone input subprocess",
-		},
-	)
-
-	microphoneProcessRunning = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "jetkvm_microphone_process_running",
-			Help: "Whether microphone input subprocess is running (1=running, 0=stopped)",
-		},
-	)
-
 	// Device health metrics
 	// Removed device health metrics - functionality not used
 
@@ -446,42 +374,6 @@ func UpdateMicrophoneMetrics(metrics UnifiedAudioMetrics) {
 	atomic.StoreInt64(&lastMetricsUpdate, time.Now().Unix())
 }
 
-// UpdateAudioProcessMetrics updates Prometheus metrics with audio subprocess data
-func UpdateAudioProcessMetrics(metrics ProcessMetrics, isRunning bool) {
-	metricsUpdateMutex.Lock()
-	defer metricsUpdateMutex.Unlock()
-
-	audioProcessCpuPercent.Set(metrics.CPUPercent)
-	audioProcessMemoryPercent.Set(metrics.MemoryPercent)
-	audioProcessMemoryRssBytes.Set(float64(metrics.MemoryRSS))
-	audioProcessMemoryVmsBytes.Set(float64(metrics.MemoryVMS))
-	if isRunning {
-		audioProcessRunning.Set(1)
-	} else {
-		audioProcessRunning.Set(0)
-	}
-
-	atomic.StoreInt64(&lastMetricsUpdate, time.Now().Unix())
-}
-
-// UpdateMicrophoneProcessMetrics updates Prometheus metrics with microphone subprocess data
-func UpdateMicrophoneProcessMetrics(metrics ProcessMetrics, isRunning bool) {
-	metricsUpdateMutex.Lock()
-	defer metricsUpdateMutex.Unlock()
-
-	microphoneProcessCpuPercent.Set(metrics.CPUPercent)
-	microphoneProcessMemoryPercent.Set(metrics.MemoryPercent)
-	microphoneProcessMemoryRssBytes.Set(float64(metrics.MemoryRSS))
-	microphoneProcessMemoryVmsBytes.Set(float64(metrics.MemoryVMS))
-	if isRunning {
-		microphoneProcessRunning.Set(1)
-	} else {
-		microphoneProcessRunning.Set(0)
-	}
-
-	atomic.StoreInt64(&lastMetricsUpdate, time.Now().Unix())
-}
-
 // UpdateAdaptiveBufferMetrics updates Prometheus metrics with adaptive buffer information
 func UpdateAdaptiveBufferMetrics(inputBufferSize, outputBufferSize int, cpuPercent, memoryPercent float64, adjustmentMade bool) {
 	metricsUpdateMutex.Lock()
@@ -514,8 +406,7 @@ func UpdateSocketBufferMetrics(component, bufferType string, size, utilization f
 	atomic.StoreInt64(&lastMetricsUpdate, time.Now().Unix())
 }
 
-// UpdateDeviceHealthMetrics - Device health monitoring functionality has been removed
+// UpdateDeviceHealthMetrics - Placeholder for future device health metrics
-// This function is no longer used as device health monitoring is not implemented
 
 // UpdateMemoryMetrics updates memory metrics
 func UpdateMemoryMetrics() {

internal/audio/core_validation.go

@@ -55,12 +55,11 @@ func ValidateZeroCopyFrame(frame *ZeroCopyAudioFrame) error {
 	maxFrameSize := cachedMaxFrameSize
 	if maxFrameSize == 0 {
 		// Fallback: get from cache
-		cache := GetCachedConfig()
+		cache := Config
-		maxFrameSize = int(cache.maxAudioFrameSize.Load())
+		maxFrameSize = cache.MaxAudioFrameSize
 		if maxFrameSize == 0 {
-			// Last resort: update cache
+			// Last resort: use default
-			cache.Update()
+			maxFrameSize = cache.MaxAudioFrameSize
-			maxFrameSize = int(cache.maxAudioFrameSize.Load())
 		}
 		// Cache globally for next calls
 		cachedMaxFrameSize = maxFrameSize
@@ -73,28 +72,15 @@ func ValidateZeroCopyFrame(frame *ZeroCopyAudioFrame) error {
 }
 
 // ValidateBufferSize validates buffer size parameters with enhanced boundary checks
-// Optimized to use AudioConfigCache for frequently accessed values
+// Optimized for minimal overhead in hotpath
 func ValidateBufferSize(size int) error {
 	if size <= 0 {
 		return fmt.Errorf("%w: buffer size %d must be positive", ErrInvalidBufferSize, size)
 	}
-
+	// Single boundary check using pre-cached value
-	// Fast path: Check against cached max frame size
+	if size > Config.SocketMaxBuffer {
-	cache := GetCachedConfig()
-	maxFrameSize := int(cache.maxAudioFrameSize.Load())
-
-	// Most common case: validating a buffer that's sized for audio frames
-	if maxFrameSize > 0 && size <= maxFrameSize {
-		return nil
-	}
-
-	// Slower path: full validation against SocketMaxBuffer
-	config := GetConfig()
-	// Use SocketMaxBuffer as the upper limit for general buffer validation
-	// This allows for socket buffers while still preventing extremely large allocations
-	if size > config.SocketMaxBuffer {
 		return fmt.Errorf("%w: buffer size %d exceeds maximum %d",
-			ErrInvalidBufferSize, size, config.SocketMaxBuffer)
+			ErrInvalidBufferSize, size, Config.SocketMaxBuffer)
 	}
 	return nil
 }
@@ -107,8 +93,8 @@ func ValidateLatency(latency time.Duration) error {
 	}
 
 	// Fast path: check against cached max latency
-	cache := GetCachedConfig()
+	cache := Config
-	maxLatency := time.Duration(cache.maxLatency.Load())
+	maxLatency := time.Duration(cache.MaxLatency)
 
 	// If we have a valid cached value, use it
 	if maxLatency > 0 {
@@ -124,16 +110,14 @@ func ValidateLatency(latency time.Duration) error {
 		return nil
 	}
 
-	// Slower path: full validation with GetConfig()
-	config := GetConfig()
 	minLatency := time.Millisecond // Minimum reasonable latency
 	if latency > 0 && latency < minLatency {
 		return fmt.Errorf("%w: latency %v below minimum %v",
 			ErrInvalidLatency, latency, minLatency)
 	}
-	if latency > config.MaxLatency {
+	if latency > Config.MaxLatency {
 		return fmt.Errorf("%w: latency %v exceeds maximum %v",
-			ErrInvalidLatency, latency, config.MaxLatency)
+			ErrInvalidLatency, latency, Config.MaxLatency)
 	}
 	return nil
 }
@@ -142,9 +126,9 @@ func ValidateLatency(latency time.Duration) error {
 // Optimized to use AudioConfigCache for frequently accessed values
 func ValidateMetricsInterval(interval time.Duration) error {
 	// Fast path: check against cached values
-	cache := GetCachedConfig()
+	cache := Config
-	minInterval := time.Duration(cache.minMetricsUpdateInterval.Load())
+	minInterval := time.Duration(cache.MinMetricsUpdateInterval)
-	maxInterval := time.Duration(cache.maxMetricsUpdateInterval.Load())
+	maxInterval := time.Duration(cache.MaxMetricsUpdateInterval)
 
 	// If we have valid cached values, use them
 	if minInterval > 0 && maxInterval > 0 {
@@ -159,10 +143,8 @@ func ValidateMetricsInterval(interval time.Duration) error {
 		return nil
 	}
 
-	// Slower path: full validation with GetConfig()
+	minInterval = Config.MinMetricsUpdateInterval
-	config := GetConfig()
+	maxInterval = Config.MaxMetricsUpdateInterval
-	minInterval = config.MinMetricsUpdateInterval
-	maxInterval = config.MaxMetricsUpdateInterval
 	if interval < minInterval {
 		return ErrInvalidMetricsInterval
 	}
@@ -184,7 +166,7 @@ func ValidateAdaptiveBufferConfig(minSize, maxSize, defaultSize int) error {
 		return ErrInvalidBufferSize
 	}
 	// Validate against global limits
-	maxBuffer := GetConfig().SocketMaxBuffer
+	maxBuffer := Config.SocketMaxBuffer
 	if maxSize > maxBuffer {
 		return ErrInvalidBufferSize
 	}
@@ -193,11 +175,9 @@ func ValidateAdaptiveBufferConfig(minSize, maxSize, defaultSize int) error {
 
 // ValidateInputIPCConfig validates input IPC configuration
 func ValidateInputIPCConfig(sampleRate, channels, frameSize int) error {
-	// Use config values
+	minSampleRate := Config.MinSampleRate
-	config := GetConfig()
+	maxSampleRate := Config.MaxSampleRate
-	minSampleRate := config.MinSampleRate
+	maxChannels := Config.MaxChannels
-	maxSampleRate := config.MaxSampleRate
-	maxChannels := config.MaxChannels
 	if sampleRate < minSampleRate || sampleRate > maxSampleRate {
 		return ErrInvalidSampleRate
 	}
@@ -212,11 +192,9 @@ func ValidateInputIPCConfig(sampleRate, channels, frameSize int) error {
 
 // ValidateOutputIPCConfig validates output IPC configuration
 func ValidateOutputIPCConfig(sampleRate, channels, frameSize int) error {
-	// Use config values
+	minSampleRate := Config.MinSampleRate
-	config := GetConfig()
+	maxSampleRate := Config.MaxSampleRate
-	minSampleRate := config.MinSampleRate
+	maxChannels := Config.MaxChannels
-	maxSampleRate := config.MaxSampleRate
-	maxChannels := config.MaxChannels
 	if sampleRate < minSampleRate || sampleRate > maxSampleRate {
 		return ErrInvalidSampleRate
 	}
@@ -229,130 +207,51 @@ func ValidateOutputIPCConfig(sampleRate, channels, frameSize int) error {
 	return nil
 }
 
-// ValidateLatencyConfig validates latency monitor configuration
-func ValidateLatencyConfig(config LatencyConfig) error {
-	if err := ValidateLatency(config.TargetLatency); err != nil {
-		return err
-	}
-	if err := ValidateLatency(config.MaxLatency); err != nil {
-		return err
-	}
-	if config.TargetLatency >= config.MaxLatency {
-		return ErrInvalidLatency
-	}
-	if err := ValidateMetricsInterval(config.OptimizationInterval); err != nil {
-		return err
-	}
-	if config.HistorySize <= 0 {
-		return ErrInvalidBufferSize
-	}
-	if config.JitterThreshold < 0 {
-		return ErrInvalidLatency
-	}
-	if config.AdaptiveThreshold < 0 || config.AdaptiveThreshold > 1.0 {
-		return ErrInvalidConfiguration
-	}
-	return nil
-}
-
 // ValidateSampleRate validates audio sample rate values
-// Optimized to use AudioConfigCache for frequently accessed values
+// Optimized for minimal overhead in hotpath
 func ValidateSampleRate(sampleRate int) error {
 	if sampleRate <= 0 {
 		return fmt.Errorf("%w: sample rate %d must be positive", ErrInvalidSampleRate, sampleRate)
 	}
-
+	// Direct validation against valid rates
-	// Fast path: Check against cached sample rate first
+	for _, rate := range Config.ValidSampleRates {
-	cache := GetCachedConfig()
-	cachedRate := int(cache.sampleRate.Load())
-
-	// Most common case: validating against the current sample rate
-	if sampleRate == cachedRate {
-		return nil
-	}
-
-	// Slower path: check against all valid rates
-	config := GetConfig()
-	validRates := config.ValidSampleRates
-	for _, rate := range validRates {
 		if sampleRate == rate {
 			return nil
 		}
 	}
-	return fmt.Errorf("%w: sample rate %d not in supported rates %v",
+	return fmt.Errorf("%w: sample rate %d not in valid rates %v",
-		ErrInvalidSampleRate, sampleRate, validRates)
+		ErrInvalidSampleRate, sampleRate, Config.ValidSampleRates)
 }
 
 // ValidateChannelCount validates audio channel count
-// Optimized to use AudioConfigCache for frequently accessed values
+// Optimized for minimal overhead in hotpath
 func ValidateChannelCount(channels int) error {
 	if channels <= 0 {
 		return fmt.Errorf("%w: channel count %d must be positive", ErrInvalidChannels, channels)
 	}
-
+	// Direct boundary check
-	// Fast path: Check against cached channels first
+	if channels > Config.MaxChannels {
-	cache := GetCachedConfig()
-	cachedChannels := int(cache.channels.Load())
-
-	// Most common case: validating against the current channel count
-	if channels == cachedChannels {
-		return nil
-	}
-
-	// Fast path: Check against cached max channels
-	cachedMaxChannels := int(cache.maxChannels.Load())
-	if cachedMaxChannels > 0 && channels <= cachedMaxChannels {
-		return nil
-	}
-
-	// Slow path: Update cache and validate
-	cache.Update()
-	updatedMaxChannels := int(cache.maxChannels.Load())
-	if channels > updatedMaxChannels {
 		return fmt.Errorf("%w: channel count %d exceeds maximum %d",
-			ErrInvalidChannels, channels, updatedMaxChannels)
+			ErrInvalidChannels, channels, Config.MaxChannels)
 	}
 	return nil
 }
 
 // ValidateBitrate validates audio bitrate values (expects kbps)
-// Optimized to use AudioConfigCache for frequently accessed values
+// Optimized for minimal overhead in hotpath
 func ValidateBitrate(bitrate int) error {
 	if bitrate <= 0 {
 		return fmt.Errorf("%w: bitrate %d must be positive", ErrInvalidBitrate, bitrate)
 	}
-
+	// Direct boundary check with single conversion
-	// Fast path: Check against cached bitrate values
-	cache := GetCachedConfig()
-	minBitrate := int(cache.minOpusBitrate.Load())
-	maxBitrate := int(cache.maxOpusBitrate.Load())
-
-	// If we have valid cached values, use them
-	if minBitrate > 0 && maxBitrate > 0 {
-		// Convert kbps to bps for comparison with config limits
 	bitrateInBps := bitrate * 1000
-		if bitrateInBps < minBitrate {
+	if bitrateInBps < Config.MinOpusBitrate {
 		return fmt.Errorf("%w: bitrate %d kbps (%d bps) below minimum %d bps",
-				ErrInvalidBitrate, bitrate, bitrateInBps, minBitrate)
+			ErrInvalidBitrate, bitrate, bitrateInBps, Config.MinOpusBitrate)
 	}
-		if bitrateInBps > maxBitrate {
+	if bitrateInBps > Config.MaxOpusBitrate {
 		return fmt.Errorf("%w: bitrate %d kbps (%d bps) exceeds maximum %d bps",
-				ErrInvalidBitrate, bitrate, bitrateInBps, maxBitrate)
+			ErrInvalidBitrate, bitrate, bitrateInBps, Config.MaxOpusBitrate)
-		}
-		return nil
-	}
-
-	// Slower path: full validation with GetConfig()
-	config := GetConfig()
-	// Convert kbps to bps for comparison with config limits
-	bitrateInBps := bitrate * 1000
-	if bitrateInBps < config.MinOpusBitrate {
-		return fmt.Errorf("%w: bitrate %d kbps (%d bps) below minimum %d bps",
-			ErrInvalidBitrate, bitrate, bitrateInBps, config.MinOpusBitrate)
-	}
-	if bitrateInBps > config.MaxOpusBitrate {
-		return fmt.Errorf("%w: bitrate %d kbps (%d bps) exceeds maximum %d bps",
-			ErrInvalidBitrate, bitrate, bitrateInBps, config.MaxOpusBitrate)
 	}
 	return nil
 }
@@ -365,11 +264,11 @@ func ValidateFrameDuration(duration time.Duration) error {
 	}
 
 	// Fast path: Check against cached frame size first
-	cache := GetCachedConfig()
+	cache := Config
 
 	// Convert frameSize (samples) to duration for comparison
-	cachedFrameSize := int(cache.frameSize.Load())
+	cachedFrameSize := cache.FrameSize
-	cachedSampleRate := int(cache.sampleRate.Load())
+	cachedSampleRate := cache.SampleRate
 
 	// Only do this calculation if we have valid cached values
 	if cachedFrameSize > 0 && cachedSampleRate > 0 {
@@ -382,8 +281,8 @@ func ValidateFrameDuration(duration time.Duration) error {
 	}
 
 	// Fast path: Check against cached min/max frame duration
-	cachedMinDuration := time.Duration(cache.minFrameDuration.Load())
+	cachedMinDuration := time.Duration(cache.MinFrameDuration)
-	cachedMaxDuration := time.Duration(cache.maxFrameDuration.Load())
+	cachedMaxDuration := time.Duration(cache.MaxFrameDuration)
 
 	if cachedMinDuration > 0 && cachedMaxDuration > 0 {
 		if duration < cachedMinDuration {
@@ -397,10 +296,9 @@ func ValidateFrameDuration(duration time.Duration) error {
 		return nil
 	}
 
-	// Slow path: Update cache and validate
+	// Slow path: Use current config values
-	cache.Update()
+	updatedMinDuration := time.Duration(cache.MinFrameDuration)
-	updatedMinDuration := time.Duration(cache.minFrameDuration.Load())
+	updatedMaxDuration := time.Duration(cache.MaxFrameDuration)
-	updatedMaxDuration := time.Duration(cache.maxFrameDuration.Load())
 
 	if duration < updatedMinDuration {
 		return fmt.Errorf("%w: frame duration %v below minimum %v",
@@ -417,11 +315,11 @@ func ValidateFrameDuration(duration time.Duration) error {
 // Uses optimized validation functions that leverage AudioConfigCache
 func ValidateAudioConfigComplete(config AudioConfig) error {
 	// Fast path: Check if all values match the current cached configuration
-	cache := GetCachedConfig()
+	cache := Config
-	cachedSampleRate := int(cache.sampleRate.Load())
+	cachedSampleRate := cache.SampleRate
-	cachedChannels := int(cache.channels.Load())
+	cachedChannels := cache.Channels
-	cachedBitrate := int(cache.opusBitrate.Load()) / 1000 // Convert from bps to kbps
+	cachedBitrate := cache.OpusBitrate / 1000 // Convert from bps to kbps
-	cachedFrameSize := int(cache.frameSize.Load())
+	cachedFrameSize := cache.FrameSize
 
 	// Only do this calculation if we have valid cached values
 	if cachedSampleRate > 0 && cachedChannels > 0 && cachedBitrate > 0 && cachedFrameSize > 0 {
@@ -465,11 +363,11 @@ func ValidateAudioConfigConstants(config *AudioConfigConstants) error {
 	}
 	// Validate configuration values if config is provided
 	if config != nil {
-		if config.MaxFrameSize <= 0 {
+		if Config.MaxFrameSize <= 0 {
-			return fmt.Errorf("invalid MaxFrameSize: %d", config.MaxFrameSize)
+			return fmt.Errorf("invalid MaxFrameSize: %d", Config.MaxFrameSize)
 		}
-		if config.SampleRate <= 0 {
+		if Config.SampleRate <= 0 {
-			return fmt.Errorf("invalid SampleRate: %d", config.SampleRate)
+			return fmt.Errorf("invalid SampleRate: %d", Config.SampleRate)
 		}
 	}
 	return nil
@@ -481,11 +379,10 @@ var cachedMaxFrameSize int
 // InitValidationCache initializes cached validation values with actual config
 func InitValidationCache() {
 	// Initialize the global cache variable for backward compatibility
-	config := GetConfig()
+	cachedMaxFrameSize = Config.MaxAudioFrameSize
-	cachedMaxFrameSize = config.MaxAudioFrameSize
 
-	// Update the global audio config cache
+	// Initialize the global audio config cache
-	GetCachedConfig().Update()
+	cachedMaxFrameSize = Config.MaxAudioFrameSize
 }
 
 // ValidateAudioFrame validates audio frame data with cached max size for performance
@@ -502,12 +399,11 @@ func ValidateAudioFrame(data []byte) error {
 	maxSize := cachedMaxFrameSize
 	if maxSize == 0 {
 		// Fallback: get from cache only if global cache not initialized
-		cache := GetCachedConfig()
+		cache := Config
-		maxSize = int(cache.maxAudioFrameSize.Load())
+		maxSize = cache.MaxAudioFrameSize
 		if maxSize == 0 {
-			// Last resort: update cache and get fresh value
+			// Last resort: get fresh value
-			cache.Update()
+			maxSize = cache.MaxAudioFrameSize
-			maxSize = int(cache.maxAudioFrameSize.Load())
 		}
 		// Cache the value globally for next calls
 		cachedMaxFrameSize = maxSize

internal/audio/goroutine_pool.go

@@ -65,6 +65,42 @@ func (p *GoroutinePool) Submit(task Task) bool {
 	}
 }
 
+// SubmitWithBackpressure adds a task to the pool with backpressure handling
+// Returns true if task was accepted, false if dropped due to backpressure
+func (p *GoroutinePool) SubmitWithBackpressure(task Task) bool {
+	select {
+	case <-p.shutdown:
+		return false // Pool is shutting down
+	case p.taskQueue <- task:
+		// Task accepted, ensure we have a worker to process it
+		p.ensureWorkerAvailable()
+		return true
+	default:
+		// Queue is full - apply backpressure
+		// Check if we're in a high-load situation
+		queueLen := len(p.taskQueue)
+		queueCap := cap(p.taskQueue)
+		workerCount := atomic.LoadInt64(&p.workerCount)
+
+		// If queue is >90% full and we're at max workers, drop the task
+		if queueLen > int(float64(queueCap)*0.9) && workerCount >= int64(p.maxWorkers) {
+			p.logger.Warn().Int("queue_len", queueLen).Int("queue_cap", queueCap).Msg("Dropping task due to backpressure")
+			return false
+		}
+
+		// Try one more time with a short timeout
+		select {
+		case p.taskQueue <- task:
+			p.ensureWorkerAvailable()
+			return true
+		case <-time.After(1 * time.Millisecond):
+			// Still can't submit after timeout - drop task
+			p.logger.Debug().Msg("Task dropped after backpressure timeout")
+			return false
+		}
+	}
+}
+
 // ensureWorkerAvailable makes sure at least one worker is available to process tasks
 func (p *GoroutinePool) ensureWorkerAvailable() {
 	// Check if we already have enough workers
@@ -160,7 +196,7 @@ func (p *GoroutinePool) supervisor() {
 			tasks := atomic.LoadInt64(&p.taskCount)
 			queueLen := len(p.taskQueue)
 
-			p.logger.Info().
+			p.logger.Debug().
 				Int64("workers", workers).
 				Int64("tasks_processed", tasks).
 				Int("queue_length", queueLen).
@@ -179,7 +215,7 @@ func (p *GoroutinePool) Shutdown(wait bool) {
 		if wait {
 			// Wait for all tasks to be processed
 			if len(p.taskQueue) > 0 {
-				p.logger.Info().Int("remaining_tasks", len(p.taskQueue)).Msg("Waiting for tasks to complete")
+				p.logger.Debug().Int("remaining_tasks", len(p.taskQueue)).Msg("Waiting for tasks to complete")
 			}
 
 			// Close the task queue to signal no more tasks
@@ -219,7 +255,7 @@ func GetAudioProcessorPool() *GoroutinePool {
 	}
 
 	globalAudioProcessorInitOnce.Do(func() {
-		config := GetConfig()
+		config := Config
 		newPool := NewGoroutinePool(
 			"audio-processor",
 			config.MaxAudioProcessorWorkers,
@@ -241,7 +277,7 @@ func GetAudioReaderPool() *GoroutinePool {
 	}
 
 	globalAudioReaderInitOnce.Do(func() {
-		config := GetConfig()
+		config := Config
 		newPool := NewGoroutinePool(
 			"audio-reader",
 			config.MaxAudioReaderWorkers,
@@ -265,6 +301,16 @@ func SubmitAudioReaderTask(task Task) bool {
 	return GetAudioReaderPool().Submit(task)
 }
 
+// SubmitAudioProcessorTaskWithBackpressure submits a task with backpressure handling
+func SubmitAudioProcessorTaskWithBackpressure(task Task) bool {
+	return GetAudioProcessorPool().SubmitWithBackpressure(task)
+}
+
+// SubmitAudioReaderTaskWithBackpressure submits a task with backpressure handling
+func SubmitAudioReaderTaskWithBackpressure(task Task) bool {
+	return GetAudioReaderPool().SubmitWithBackpressure(task)
+}
+
 // ShutdownAudioPools shuts down all audio goroutine pools
 func ShutdownAudioPools(wait bool) {
 	logger := logging.GetDefaultLogger().With().Str("component", "audio-pools").Logger()

internal/audio/input_microphone_manager.go

@@ -108,14 +108,13 @@ func (aim *AudioInputManager) WriteOpusFrame(frame []byte) error {
 	processingTime := time.Since(startTime)
 
 	// Log high latency warnings
-	if processingTime > time.Duration(GetConfig().InputProcessingTimeoutMS)*time.Millisecond {
+	if processingTime > time.Duration(Config.InputProcessingTimeoutMS)*time.Millisecond {
 		latencyMs := float64(processingTime.Milliseconds())
 		aim.logger.Warn().
 			Float64("latency_ms", latencyMs).
 			Msg("High audio processing latency detected")
 
 		// Record latency for goroutine cleanup optimization
-		RecordAudioLatency(latencyMs)
 	}
 
 	if err != nil {
@@ -149,14 +148,13 @@ func (aim *AudioInputManager) WriteOpusFrameZeroCopy(frame *ZeroCopyAudioFrame)
 	processingTime := time.Since(startTime)
 
 	// Log high latency warnings
-	if processingTime > time.Duration(GetConfig().InputProcessingTimeoutMS)*time.Millisecond {
+	if processingTime > time.Duration(Config.InputProcessingTimeoutMS)*time.Millisecond {
 		latencyMs := float64(processingTime.Milliseconds())
 		aim.logger.Warn().
 			Float64("latency_ms", latencyMs).
 			Msg("High audio processing latency detected")
 
 		// Record latency for goroutine cleanup optimization
-		RecordAudioLatency(latencyMs)
 	}
 
 	if err != nil {

internal/audio/input_server_main.go

@@ -19,6 +19,28 @@ import (
 	"github.com/jetkvm/kvm/internal/logging"
 )
 
+// Global audio input server instance
+var globalAudioInputServer *AudioInputServer
+
+// GetGlobalAudioInputServer returns the global audio input server instance
+func GetGlobalAudioInputServer() *AudioInputServer {
+	return globalAudioInputServer
+}
+
+// ResetGlobalAudioInputServerStats resets the global audio input server stats
+func ResetGlobalAudioInputServerStats() {
+	if globalAudioInputServer != nil {
+		globalAudioInputServer.ResetServerStats()
+	}
+}
+
+// RecoverGlobalAudioInputServer attempts to recover from dropped frames
+func RecoverGlobalAudioInputServer() {
+	if globalAudioInputServer != nil {
+		globalAudioInputServer.RecoverFromDroppedFrames()
+	}
+}
+
 // getEnvInt reads an integer from environment variable with a default value
 
 // RunAudioInputServer runs the audio input server subprocess
@@ -33,10 +55,6 @@ func RunAudioInputServer() error {
 	// Initialize validation cache for optimal performance
 	InitValidationCache()
 
-	// Start adaptive buffer management for optimal performance
-	StartAdaptiveBuffering()
-	defer StopAdaptiveBuffering()
-
 	// Initialize CGO audio playback (optional for input server)
 	// This is used for audio loopback/monitoring features
 	err := CGOAudioPlaybackInit()
@@ -56,6 +74,9 @@ func RunAudioInputServer() error {
 	}
 	defer server.Close()
 
+	// Store globally for access by other functions
+	globalAudioInputServer = server
+
 	err = server.Start()
 	if err != nil {
 		logger.Error().Err(err).Msg("failed to start audio input server")
@@ -82,7 +103,7 @@ func RunAudioInputServer() error {
 	server.Stop()
 
 	// Give some time for cleanup
-	time.Sleep(GetConfig().DefaultSleepDuration)
+	time.Sleep(Config.DefaultSleepDuration)
 
 	return nil
 }

internal/audio/input_supervisor.go

@@ -73,7 +73,7 @@ func (ais *AudioInputSupervisor) supervisionLoop() {
 	// Configure supervision parameters (no restart for input supervisor)
 	config := SupervisionConfig{
 		ProcessType:        "audio input server",
-		Timeout:            GetConfig().InputSupervisorTimeout,
+		Timeout:            Config.InputSupervisorTimeout,
 		EnableRestart:      false, // Input supervisor doesn't restart
 		MaxRestartAttempts: 0,
 		RestartWindow:      0,
@@ -135,10 +135,9 @@ func (ais *AudioInputSupervisor) startProcess() error {
 	ais.logger.Info().Int("pid", ais.processPID).Strs("args", args).Strs("opus_env", ais.opusEnv).Msg("audio input server process started")
 
 	// Add process to monitoring
-	ais.processMonitor.AddProcess(ais.processPID, "audio-input-server")
 
-	// Connect client to the server
+	// Connect client to the server synchronously to avoid race condition
-	go ais.connectClient()
+	ais.connectClient()
 
 	return nil
 }
@@ -164,7 +163,7 @@ func (ais *AudioInputSupervisor) Stop() {
 	select {
 	case <-ais.processDone:
 		ais.logger.Info().Str("component", "audio-input-supervisor").Msg("component stopped gracefully")
-	case <-time.After(GetConfig().InputSupervisorTimeout):
+	case <-time.After(Config.InputSupervisorTimeout):
 		ais.logger.Warn().Str("component", "audio-input-supervisor").Msg("component did not stop gracefully, forcing termination")
 		ais.forceKillProcess("audio input server")
 	}
@@ -190,7 +189,7 @@ func (ais *AudioInputSupervisor) GetClient() *AudioInputClient {
 // connectClient attempts to connect the client to the server
 func (ais *AudioInputSupervisor) connectClient() {
 	// Wait briefly for the server to start and create socket
-	time.Sleep(GetConfig().DefaultSleepDuration)
+	time.Sleep(Config.DefaultSleepDuration)
 
 	// Additional small delay to ensure socket is ready after restart
 	time.Sleep(20 * time.Millisecond)

internal/audio/ipc_common.go

@@ -49,7 +49,7 @@ func NewGenericMessagePool(size int) *GenericMessagePool {
 	pool.preallocated = make([]*OptimizedMessage, pool.preallocSize)
 	for i := 0; i < pool.preallocSize; i++ {
 		pool.preallocated[i] = &OptimizedMessage{
-			data: make([]byte, 0, GetConfig().MaxFrameSize),
+			data: make([]byte, 0, Config.MaxFrameSize),
 		}
 	}
 
@@ -57,7 +57,7 @@ func NewGenericMessagePool(size int) *GenericMessagePool {
 	for i := 0; i < size-pool.preallocSize; i++ {
 		select {
 		case pool.pool <- &OptimizedMessage{
-			data: make([]byte, 0, GetConfig().MaxFrameSize),
+			data: make([]byte, 0, Config.MaxFrameSize),
 		}:
 		default:
 			break
@@ -89,7 +89,7 @@ func (mp *GenericMessagePool) Get() *OptimizedMessage {
 		// Pool empty, create new message
 		atomic.AddInt64(&mp.missCount, 1)
 		return &OptimizedMessage{
-			data: make([]byte, 0, GetConfig().MaxFrameSize),
+			data: make([]byte, 0, Config.MaxFrameSize),
 		}
 	}
 }
@@ -132,6 +132,42 @@ func (mp *GenericMessagePool) GetStats() (hitCount, missCount int64, hitRate flo
 	return hits, misses, hitRate
 }
 
+// Helper functions
+
+// EncodeMessageHeader encodes a message header into a byte slice
+func EncodeMessageHeader(magic uint32, msgType uint8, length uint32, timestamp int64) []byte {
+	header := make([]byte, 17)
+	binary.LittleEndian.PutUint32(header[0:4], magic)
+	header[4] = msgType
+	binary.LittleEndian.PutUint32(header[5:9], length)
+	binary.LittleEndian.PutUint64(header[9:17], uint64(timestamp))
+	return header
+}
+
+// EncodeAudioConfig encodes basic audio configuration to binary format
+func EncodeAudioConfig(sampleRate, channels, frameSize int) []byte {
+	data := make([]byte, 12) // 3 * int32
+	binary.LittleEndian.PutUint32(data[0:4], uint32(sampleRate))
+	binary.LittleEndian.PutUint32(data[4:8], uint32(channels))
+	binary.LittleEndian.PutUint32(data[8:12], uint32(frameSize))
+	return data
+}
+
+// EncodeOpusConfig encodes complete Opus configuration to binary format
+func EncodeOpusConfig(sampleRate, channels, frameSize, bitrate, complexity, vbr, signalType, bandwidth, dtx int) []byte {
+	data := make([]byte, 36) // 9 * int32
+	binary.LittleEndian.PutUint32(data[0:4], uint32(sampleRate))
+	binary.LittleEndian.PutUint32(data[4:8], uint32(channels))
+	binary.LittleEndian.PutUint32(data[8:12], uint32(frameSize))
+	binary.LittleEndian.PutUint32(data[12:16], uint32(bitrate))
+	binary.LittleEndian.PutUint32(data[16:20], uint32(complexity))
+	binary.LittleEndian.PutUint32(data[20:24], uint32(vbr))
+	binary.LittleEndian.PutUint32(data[24:28], uint32(signalType))
+	binary.LittleEndian.PutUint32(data[28:32], uint32(bandwidth))
+	binary.LittleEndian.PutUint32(data[32:36], uint32(dtx))
+	return data
+}
+
 // Common write message function
 func WriteIPCMessage(conn net.Conn, msg IPCMessage, pool *GenericMessagePool, droppedFramesCounter *int64) error {
 	if conn == nil {
@@ -143,13 +179,11 @@ func WriteIPCMessage(conn net.Conn, msg IPCMessage, pool *GenericMessagePool, dr
 	defer pool.Put(optMsg)
 
 	// Prepare header in pre-allocated buffer
-	binary.LittleEndian.PutUint32(optMsg.header[0:4], msg.GetMagic())
+	header := EncodeMessageHeader(msg.GetMagic(), msg.GetType(), msg.GetLength(), msg.GetTimestamp())
-	optMsg.header[4] = msg.GetType()
+	copy(optMsg.header[:], header)
-	binary.LittleEndian.PutUint32(optMsg.header[5:9], msg.GetLength())
-	binary.LittleEndian.PutUint64(optMsg.header[9:17], uint64(msg.GetTimestamp()))
 
 	// Set write deadline for timeout handling (more efficient than goroutines)
-	if deadline := time.Now().Add(GetConfig().WriteTimeout); deadline.After(time.Now()) {
+	if deadline := time.Now().Add(Config.WriteTimeout); deadline.After(time.Now()) {
 		if err := conn.SetWriteDeadline(deadline); err != nil {
 			// If we can't set deadline, proceed without it
 			// This maintains compatibility with connections that don't support deadlines

internal/audio/ipc_input.go

@@ -23,8 +23,8 @@ const (
 
 // Constants are now defined in unified_ipc.go
 var (
-	maxFrameSize    = GetConfig().MaxFrameSize    // Maximum Opus frame size
+	maxFrameSize    = Config.MaxFrameSize    // Maximum Opus frame size
-	messagePoolSize = GetConfig().MessagePoolSize // Pre-allocated message pool size
+	messagePoolSize = Config.MessagePoolSize // Pre-allocated message pool size
 )
 
 // Legacy aliases for backward compatibility
@@ -77,7 +77,7 @@ func initializeMessagePool() {
 	messagePoolInitOnce.Do(func() {
 		preallocSize := messagePoolSize / 4 // 25% pre-allocated for immediate use
 		globalMessagePool.preallocSize = preallocSize
-		globalMessagePool.maxPoolSize = messagePoolSize * GetConfig().PoolGrowthMultiplier // Allow growth up to 2x
+		globalMessagePool.maxPoolSize = messagePoolSize * Config.PoolGrowthMultiplier // Allow growth up to 2x
 		globalMessagePool.preallocated = make([]*OptimizedIPCMessage, 0, preallocSize)
 
 		// Pre-allocate messages for immediate use
@@ -191,6 +191,10 @@ type AudioInputServer struct {
 	stopChan    chan struct{}         // Stop signal for all goroutines
 	wg          sync.WaitGroup        // Wait group for goroutine coordination
 
+	// Channel resizing support
+	channelMutex   sync.RWMutex // Protects channel recreation
+	lastBufferSize int64        // Last known buffer size for change detection
+
 	// Socket buffer configuration
 	socketBufferConfig SocketBufferConfig
 }
@@ -227,9 +231,15 @@ func NewAudioInputServer() (*AudioInputServer, error) {
 		return nil, fmt.Errorf("failed to create unix socket after 3 attempts: %w", err)
 	}
 
-	// Get initial buffer size from adaptive buffer manager
+	// Get initial buffer size from config
-	adaptiveManager := GetAdaptiveBufferManager()
+	initialBufferSize := int64(Config.AdaptiveDefaultBufferSize)
-	initialBufferSize := int64(adaptiveManager.GetInputBufferSize())
+
+	// Ensure minimum buffer size to prevent immediate overflow
+	// Use at least 50 frames to handle burst traffic
+	minBufferSize := int64(50)
+	if initialBufferSize < minBufferSize {
+		initialBufferSize = minBufferSize
+	}
 
 	// Initialize socket buffer configuration
 	socketBufferConfig := DefaultSocketBufferConfig()
@@ -240,6 +250,7 @@ func NewAudioInputServer() (*AudioInputServer, error) {
 		processChan:        make(chan *InputIPCMessage, initialBufferSize),
 		stopChan:           make(chan struct{}),
 		bufferSize:         initialBufferSize,
+		lastBufferSize:     initialBufferSize,
 		socketBufferConfig: socketBufferConfig,
 	}, nil
 }
@@ -366,7 +377,7 @@ func (ais *AudioInputServer) handleConnection(conn net.Conn) {
 			if ais.conn == nil {
 				return
 			}
-			time.Sleep(GetConfig().DefaultSleepDuration)
+			time.Sleep(Config.DefaultSleepDuration)
 		}
 	}
 }
@@ -487,11 +498,11 @@ func (ais *AudioInputServer) processOpusFrame(data []byte) error {
 	}
 
 	// Get cached config once - avoid repeated calls and locking
-	cache := GetCachedConfig()
+	cache := Config
 	// Skip cache expiry check in hotpath - background updates handle this
 
 	// Get a PCM buffer from the pool for optimized decode-write
-	pcmBuffer := GetBufferFromPool(cache.GetMaxPCMBufferSize())
+	pcmBuffer := GetBufferFromPool(cache.MaxPCMBufferSize)
 	defer ReturnBufferToPool(pcmBuffer)
 
 	// Direct CGO call - avoid wrapper function overhead
@@ -634,9 +645,9 @@ func (aic *AudioInputClient) Connect() error {
 			return nil
 		}
 		// Exponential backoff starting from config
-		backoffStart := GetConfig().BackoffStart
+		backoffStart := Config.BackoffStart
 		delay := time.Duration(backoffStart.Nanoseconds()*(1<<uint(i/3))) * time.Nanosecond
-		maxDelay := GetConfig().MaxRetryDelay
+		maxDelay := Config.MaxRetryDelay
 		if delay > maxDelay {
 			delay = maxDelay
 		}
@@ -677,32 +688,28 @@ func (aic *AudioInputClient) Disconnect() {
 
 // SendFrame sends an Opus frame to the audio input server
 func (aic *AudioInputClient) SendFrame(frame []byte) error {
+	// Fast path validation
+	if len(frame) == 0 {
+		return nil
+	}
+
 	aic.mtx.Lock()
-	defer aic.mtx.Unlock()
-
 	if !aic.running || aic.conn == nil {
-		return fmt.Errorf("not connected to audio input server")
+		aic.mtx.Unlock()
-	}
+		return fmt.Errorf("not connected")
-
-	frameLen := len(frame)
-	if frameLen == 0 {
-		return nil // Empty frame, ignore
-	}
-
-	// Inline frame validation to reduce function call overhead
-	if frameLen > maxFrameSize {
-		return ErrFrameDataTooLarge
 	}
 
+	// Direct message creation without timestamp overhead
 	msg := &InputIPCMessage{
 		Magic:  inputMagicNumber,
 		Type:   InputMessageTypeOpusFrame,
-		Length:    uint32(frameLen),
+		Length: uint32(len(frame)),
-		Timestamp: time.Now().UnixNano(),
 		Data:   frame,
 	}
 
-	return aic.writeMessage(msg)
+	err := aic.writeMessage(msg)
+	aic.mtx.Unlock()
+	return err
 }
 
 // SendFrameZeroCopy sends a zero-copy Opus frame to the audio input server
@@ -756,11 +763,8 @@ func (aic *AudioInputClient) SendConfig(config InputIPCConfig) error {
 		return fmt.Errorf("input configuration validation failed: %w", err)
 	}
 
-	// Serialize config (simple binary format)
+	// Serialize config using common function
-	data := make([]byte, 12) // 3 * int32
+	data := EncodeAudioConfig(config.SampleRate, config.Channels, config.FrameSize)
-	binary.LittleEndian.PutUint32(data[0:4], uint32(config.SampleRate))
-	binary.LittleEndian.PutUint32(data[4:8], uint32(config.Channels))
-	binary.LittleEndian.PutUint32(data[8:12], uint32(config.FrameSize))
 
 	msg := &InputIPCMessage{
 		Magic:     inputMagicNumber,
@@ -788,17 +792,8 @@ func (aic *AudioInputClient) SendOpusConfig(config InputIPCOpusConfig) error {
 			config.SampleRate, config.Channels, config.FrameSize, config.Bitrate)
 	}
 
-	// Serialize Opus configuration (9 * int32 = 36 bytes)
+	// Serialize Opus configuration using common function
-	data := make([]byte, 36)
+	data := EncodeOpusConfig(config.SampleRate, config.Channels, config.FrameSize, config.Bitrate, config.Complexity, config.VBR, config.SignalType, config.Bandwidth, config.DTX)
-	binary.LittleEndian.PutUint32(data[0:4], uint32(config.SampleRate))
-	binary.LittleEndian.PutUint32(data[4:8], uint32(config.Channels))
-	binary.LittleEndian.PutUint32(data[8:12], uint32(config.FrameSize))
-	binary.LittleEndian.PutUint32(data[12:16], uint32(config.Bitrate))
-	binary.LittleEndian.PutUint32(data[16:20], uint32(config.Complexity))
-	binary.LittleEndian.PutUint32(data[20:24], uint32(config.VBR))
-	binary.LittleEndian.PutUint32(data[24:28], uint32(config.SignalType))
-	binary.LittleEndian.PutUint32(data[28:32], uint32(config.Bandwidth))
-	binary.LittleEndian.PutUint32(data[32:36], uint32(config.DTX))
 
 	msg := &InputIPCMessage{
 		Magic:     inputMagicNumber,
@@ -866,6 +861,28 @@ func (aic *AudioInputClient) ResetStats() {
 	ResetFrameStats(&aic.totalFrames, &aic.droppedFrames)
 }
 
+// ResetServerStats resets server frame statistics
+func (ais *AudioInputServer) ResetServerStats() {
+	atomic.StoreInt64(&ais.totalFrames, 0)
+	atomic.StoreInt64(&ais.droppedFrames, 0)
+}
+
+// RecoverFromDroppedFrames attempts to recover when too many frames are dropped
+func (ais *AudioInputServer) RecoverFromDroppedFrames() {
+	total := atomic.LoadInt64(&ais.totalFrames)
+	dropped := atomic.LoadInt64(&ais.droppedFrames)
+
+	// If more than 50% of frames are dropped, attempt recovery
+	if total > 100 && dropped > total/2 {
+		logger := logging.GetDefaultLogger().With().Str("component", AudioInputServerComponent).Logger()
+		logger.Warn().Int64("total", total).Int64("dropped", dropped).Msg("high drop rate detected, attempting recovery")
+
+		// Reset stats and update buffer size from adaptive manager
+		ais.ResetServerStats()
+		ais.UpdateBufferSize()
+	}
+}
+
 // startReaderGoroutine starts the message reader using the goroutine pool
 func (ais *AudioInputServer) startReaderGoroutine() {
 	ais.wg.Add(1)
@@ -877,10 +894,10 @@ func (ais *AudioInputServer) startReaderGoroutine() {
 		// Enhanced error tracking and recovery
 		var consecutiveErrors int
 		var lastErrorTime time.Time
-		maxConsecutiveErrors := GetConfig().MaxConsecutiveErrors
+		maxConsecutiveErrors := Config.MaxConsecutiveErrors
-		errorResetWindow := GetConfig().RestartWindow // Use existing restart window
+		errorResetWindow := Config.RestartWindow // Use existing restart window
-		baseBackoffDelay := GetConfig().RetryDelay
+		baseBackoffDelay := Config.RetryDelay
-		maxBackoffDelay := GetConfig().MaxRetryDelay
+		maxBackoffDelay := Config.MaxRetryDelay
 
 		logger := logging.GetDefaultLogger().With().Str("component", AudioInputClientComponent).Logger()
 
@@ -950,9 +967,13 @@ func (ais *AudioInputServer) startReaderGoroutine() {
 				}
 			}
 
-			// Send to message channel with non-blocking write
+			// Send to message channel with non-blocking write (use read lock for channel access)
+			ais.channelMutex.RLock()
+			messageChan := ais.messageChan
+			ais.channelMutex.RUnlock()
+
 			select {
-			case ais.messageChan <- msg:
+			case messageChan <- msg:
 				atomic.AddInt64(&ais.totalFrames, 1)
 			default:
 				// Channel full, drop message
@@ -966,16 +987,16 @@ func (ais *AudioInputServer) startReaderGoroutine() {
 		}
 	}
 
-	// Submit the reader task to the audio reader pool
+	// Submit the reader task to the audio reader pool with backpressure
 	logger := logging.GetDefaultLogger().With().Str("component", AudioInputClientComponent).Logger()
-	if !SubmitAudioReaderTask(readerTask) {
+	if !SubmitAudioReaderTaskWithBackpressure(readerTask) {
-		// If the pool is full or shutting down, fall back to direct goroutine creation
+		// Task was dropped due to backpressure - this is expected under high load
-		// Only log if warn level enabled - avoid sampling logic in critical path
+		// Log at debug level to avoid spam, but track the drop
-		if logger.GetLevel() <= zerolog.WarnLevel {
+		logger.Debug().Msg("Audio reader task dropped due to backpressure")
-			logger.Warn().Msg("Audio reader pool full or shutting down, falling back to direct goroutine creation")
-		}
 
-		go readerTask()
+		// Don't fall back to unlimited goroutine creation
+		// Instead, let the system recover naturally
+		ais.wg.Done() // Decrement the wait group since we're not starting the task
 	}
 }
 
@@ -987,7 +1008,7 @@ func (ais *AudioInputServer) startProcessorGoroutine() {
 	processorTask := func() {
 		// Only lock OS thread and set priority for high-load scenarios
 		// This reduces interference with input processing threads
-		config := GetConfig()
+		config := Config
 		useThreadOptimizations := config.MaxAudioProcessorWorkers > 8
 
 		if useThreadOptimizations {
@@ -1011,7 +1032,7 @@ func (ais *AudioInputServer) startProcessorGoroutine() {
 			select {
 			case <-ais.stopChan:
 				return
-			case msg := <-ais.messageChan:
+			case msg := <-ais.getMessageChan():
 				// Process message with error handling
 				start := time.Now()
 				err := ais.processMessageWithRecovery(msg, logger)
@@ -1032,9 +1053,10 @@ func (ais *AudioInputServer) startProcessorGoroutine() {
 					// If too many processing errors, drop frames more aggressively
 					if processingErrors >= maxProcessingErrors {
 						// Clear processing queue to recover
-						for len(ais.processChan) > 0 {
+						processChan := ais.getProcessChan()
+						for len(processChan) > 0 {
 							select {
-							case <-ais.processChan:
+							case <-processChan:
 								atomic.AddInt64(&ais.droppedFrames, 1)
 							default:
 								break
@@ -1057,13 +1079,16 @@ func (ais *AudioInputServer) startProcessorGoroutine() {
 		}
 	}
 
-	// Submit the processor task to the audio processor pool
+	// Submit the processor task to the audio processor pool with backpressure
 	logger := logging.GetDefaultLogger().With().Str("component", AudioInputClientComponent).Logger()
-	if !SubmitAudioProcessorTask(processorTask) {
+	if !SubmitAudioProcessorTaskWithBackpressure(processorTask) {
-		// If the pool is full or shutting down, fall back to direct goroutine creation
+		// Task was dropped due to backpressure - this is expected under high load
-		logger.Warn().Msg("Audio processor pool full or shutting down, falling back to direct goroutine creation")
+		// Log at debug level to avoid spam, but track the drop
+		logger.Debug().Msg("Audio processor task dropped due to backpressure")
 
-		go processorTask()
+		// Don't fall back to unlimited goroutine creation
+		// Instead, let the system recover naturally
+		ais.wg.Done() // Decrement the wait group since we're not starting the task
 	}
 }
 
@@ -1072,13 +1097,14 @@ func (ais *AudioInputServer) processMessageWithRecovery(msg *InputIPCMessage, lo
 	// Intelligent frame dropping: prioritize recent frames
 	if msg.Type == InputMessageTypeOpusFrame {
 		// Check if processing queue is getting full
-		queueLen := len(ais.processChan)
+		processChan := ais.getProcessChan()
+		queueLen := len(processChan)
 		bufferSize := int(atomic.LoadInt64(&ais.bufferSize))
 
 		if queueLen > bufferSize*3/4 {
 			// Drop oldest frames, keep newest
 			select {
-			case <-ais.processChan: // Remove oldest
+			case <-processChan: // Remove oldest
 				atomic.AddInt64(&ais.droppedFrames, 1)
 				logger.Debug().Msg("Dropped oldest frame to make room")
 			default:
@@ -1086,11 +1112,15 @@ func (ais *AudioInputServer) processMessageWithRecovery(msg *InputIPCMessage, lo
 		}
 	}
 
-	// Send to processing queue with timeout
+	// Send to processing queue with timeout (use read lock for channel access)
+	ais.channelMutex.RLock()
+	processChan := ais.processChan
+	ais.channelMutex.RUnlock()
+
 	select {
-	case ais.processChan <- msg:
+	case processChan <- msg:
 		return nil
-	case <-time.After(GetConfig().WriteTimeout):
+	case <-time.After(Config.WriteTimeout):
 		// Processing queue full and timeout reached, drop frame
 		atomic.AddInt64(&ais.droppedFrames, 1)
 		return fmt.Errorf("processing queue timeout")
@@ -1109,7 +1139,7 @@ func (ais *AudioInputServer) startMonitorGoroutine() {
 	monitorTask := func() {
 		// Monitor goroutine doesn't need thread locking for most scenarios
 		// Only use thread optimizations for high-throughput scenarios
-		config := GetConfig()
+		config := Config
 		useThreadOptimizations := config.MaxAudioProcessorWorkers > 8
 
 		if useThreadOptimizations {
@@ -1120,11 +1150,11 @@ func (ais *AudioInputServer) startMonitorGoroutine() {
 		}
 
 		defer ais.wg.Done()
-		ticker := time.NewTicker(GetConfig().DefaultTickerInterval)
+		ticker := time.NewTicker(Config.DefaultTickerInterval)
 		defer ticker.Stop()
 
 		// Buffer size update ticker (less frequent)
-		bufferUpdateTicker := time.NewTicker(GetConfig().BufferUpdateInterval)
+		bufferUpdateTicker := time.NewTicker(Config.BufferUpdateInterval)
 		defer bufferUpdateTicker.Stop()
 
 		for {
@@ -1135,7 +1165,7 @@ func (ais *AudioInputServer) startMonitorGoroutine() {
 				// Process frames from processing queue
 				for {
 					select {
-					case msg := <-ais.processChan:
+					case msg := <-ais.getProcessChan():
 						start := time.Now()
 						err := ais.processMessage(msg)
 						processingTime := time.Since(start)
@@ -1174,8 +1204,7 @@ func (ais *AudioInputServer) startMonitorGoroutine() {
 				// Check if we need to update buffer size
 				select {
 				case <-bufferUpdateTicker.C:
-					// Update buffer size from adaptive buffer manager
+					// Buffer size is now fixed from config
-					ais.UpdateBufferSize()
 				default:
 					// No buffer update needed
 				}
@@ -1183,13 +1212,16 @@ func (ais *AudioInputServer) startMonitorGoroutine() {
 		}
 	}
 
-	// Submit the monitor task to the audio processor pool
+	// Submit the monitor task to the audio processor pool with backpressure
 	logger := logging.GetDefaultLogger().With().Str("component", AudioInputClientComponent).Logger()
-	if !SubmitAudioProcessorTask(monitorTask) {
+	if !SubmitAudioProcessorTaskWithBackpressure(monitorTask) {
-		// If the pool is full or shutting down, fall back to direct goroutine creation
+		// Task was dropped due to backpressure - this is expected under high load
-		logger.Warn().Msg("Audio processor pool full or shutting down, falling back to direct goroutine creation")
+		// Log at debug level to avoid spam, but track the drop
+		logger.Debug().Msg("Audio monitor task dropped due to backpressure")
 
-		go monitorTask()
+		// Don't fall back to unlimited goroutine creation
+		// Instead, let the system recover naturally
+		ais.wg.Done() // Decrement the wait group since we're not starting the task
 	}
 }
 
@@ -1201,17 +1233,16 @@ func (ais *AudioInputServer) GetServerStats() (total, dropped int64, avgProcessi
 		atomic.LoadInt64(&ais.bufferSize)
 }
 
-// UpdateBufferSize updates the buffer size from adaptive buffer manager
+// UpdateBufferSize updates the buffer size (now using fixed config values)
 func (ais *AudioInputServer) UpdateBufferSize() {
-	adaptiveManager := GetAdaptiveBufferManager()
+	// Buffer size is now fixed from config
-	newSize := int64(adaptiveManager.GetInputBufferSize())
+	newSize := int64(Config.AdaptiveDefaultBufferSize)
 	atomic.StoreInt64(&ais.bufferSize, newSize)
 }
 
-// ReportLatency reports processing latency to adaptive buffer manager
+// ReportLatency reports processing latency (now a no-op with fixed buffers)
 func (ais *AudioInputServer) ReportLatency(latency time.Duration) {
-	adaptiveManager := GetAdaptiveBufferManager()
+	// Latency reporting is now a no-op with fixed buffer sizes
-	adaptiveManager.UpdateLatency(latency)
 }
 
 // GetMessagePoolStats returns detailed statistics about the message pool
@@ -1226,7 +1257,7 @@ func (mp *MessagePool) GetMessagePoolStats() MessagePoolStats {
 
 	var hitRate float64
 	if totalRequests > 0 {
-		hitRate = float64(hitCount) / float64(totalRequests) * GetConfig().PercentageMultiplier
+		hitRate = float64(hitCount) / float64(totalRequests) * Config.PercentageMultiplier
 	}
 
 	// Calculate channel pool size
@@ -1259,6 +1290,20 @@ func GetGlobalMessagePoolStats() MessagePoolStats {
 	return globalMessagePool.GetMessagePoolStats()
 }
 
+// getMessageChan safely returns the current message channel
+func (ais *AudioInputServer) getMessageChan() chan *InputIPCMessage {
+	ais.channelMutex.RLock()
+	defer ais.channelMutex.RUnlock()
+	return ais.messageChan
+}
+
+// getProcessChan safely returns the current process channel
+func (ais *AudioInputServer) getProcessChan() chan *InputIPCMessage {
+	ais.channelMutex.RLock()
+	defer ais.channelMutex.RUnlock()
+	return ais.processChan
+}
+
 // Helper functions
 
 // getInputSocketPath is now defined in unified_ipc.go

internal/audio/ipc_output.go

@@ -4,11 +4,18 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io"
+	"net"
+	"sync"
 	"sync/atomic"
+	"time"
+
+	"github.com/jetkvm/kvm/internal/logging"
+	"github.com/rs/zerolog"
 )
 
 // Legacy aliases for backward compatibility
 type OutputIPCConfig = UnifiedIPCConfig
+type OutputIPCOpusConfig = UnifiedIPCOpusConfig
 type OutputMessageType = UnifiedMessageType
 type OutputIPCMessage = UnifiedIPCMessage
 
@@ -16,6 +23,7 @@ type OutputIPCMessage = UnifiedIPCMessage
 const (
 	OutputMessageTypeOpusFrame  = MessageTypeOpusFrame
 	OutputMessageTypeConfig     = MessageTypeConfig
+	OutputMessageTypeOpusConfig = MessageTypeOpusConfig
 	OutputMessageTypeStop       = MessageTypeStop
 	OutputMessageTypeHeartbeat  = MessageTypeHeartbeat
 	OutputMessageTypeAck        = MessageTypeAck
@@ -24,47 +32,365 @@ const (
 // Methods are now inherited from UnifiedIPCMessage
 
 // Global shared message pool for output IPC client header reading
-var globalOutputClientMessagePool = NewGenericMessagePool(GetConfig().OutputMessagePoolSize)
+var globalOutputClientMessagePool = NewGenericMessagePool(Config.OutputMessagePoolSize)
 
-// AudioOutputServer is now an alias for UnifiedAudioServer
+// AudioOutputServer provides audio output IPC functionality
-type AudioOutputServer = UnifiedAudioServer
+type AudioOutputServer struct {
+	// Atomic counters
+	bufferSize    int64 // Current buffer size (atomic)
+	droppedFrames int64 // Dropped frames counter (atomic)
+	totalFrames   int64 // Total frames counter (atomic)
+
+	listener net.Listener
+	conn     net.Conn
+	mtx      sync.Mutex
+	running  bool
+	logger   zerolog.Logger
+
+	// Message channels
+	messageChan chan *OutputIPCMessage // Buffered channel for incoming messages
+	processChan chan *OutputIPCMessage // Buffered channel for processing queue
+	wg          sync.WaitGroup         // Wait group for goroutine coordination
+
+	// Configuration
+	socketPath  string
+	magicNumber uint32
+}
 
 func NewAudioOutputServer() (*AudioOutputServer, error) {
-	return NewUnifiedAudioServer(false) // false = output server
+	socketPath := getOutputSocketPath()
+	logger := logging.GetDefaultLogger().With().Str("component", "audio-output-server").Logger()
+
+	server := &AudioOutputServer{
+		socketPath:  socketPath,
+		magicNumber: Config.OutputMagicNumber,
+		logger:      logger,
+		messageChan: make(chan *OutputIPCMessage, Config.ChannelBufferSize),
+		processChan: make(chan *OutputIPCMessage, Config.ChannelBufferSize),
 	}
 
-// Start method is now inherited from UnifiedAudioServer
+	return server, nil
-
+}
-// acceptConnections method is now inherited from UnifiedAudioServer
-
-// startProcessorGoroutine method is now inherited from UnifiedAudioServer
-
-// Stop method is now inherited from UnifiedAudioServer
-
-// Close method is now inherited from UnifiedAudioServer
-
-// SendFrame method is now inherited from UnifiedAudioServer
 
 // GetServerStats returns server performance statistics
-func (s *AudioOutputServer) GetServerStats() (total, dropped int64, bufferSize int64) {
+// Start starts the audio output server
-	stats := GetFrameStats(&s.totalFrames, &s.droppedFrames)
+func (s *AudioOutputServer) Start() error {
-	return stats.Total, stats.Dropped, atomic.LoadInt64(&s.bufferSize)
+	s.mtx.Lock()
+	defer s.mtx.Unlock()
+
+	if s.running {
+		return fmt.Errorf("audio output server is already running")
 	}
 
-// AudioOutputClient is now an alias for UnifiedAudioClient
+	// Create Unix socket
-type AudioOutputClient = UnifiedAudioClient
+	listener, err := net.Listen("unix", s.socketPath)
+	if err != nil {
+		return fmt.Errorf("failed to create unix socket: %w", err)
+	}
+
+	s.listener = listener
+	s.running = true
+
+	// Start goroutines
+	s.wg.Add(1)
+	go s.acceptConnections()
+
+	s.logger.Info().Str("socket_path", s.socketPath).Msg("Audio output server started")
+	return nil
+}
+
+// Stop stops the audio output server
+func (s *AudioOutputServer) Stop() {
+	s.mtx.Lock()
+	defer s.mtx.Unlock()
+
+	if !s.running {
+		return
+	}
+
+	s.running = false
+
+	if s.listener != nil {
+		s.listener.Close()
+	}
+
+	if s.conn != nil {
+		s.conn.Close()
+	}
+
+	// Close channels
+	close(s.messageChan)
+	close(s.processChan)
+
+	s.wg.Wait()
+	s.logger.Info().Msg("Audio output server stopped")
+}
+
+// acceptConnections handles incoming connections
+func (s *AudioOutputServer) acceptConnections() {
+	defer s.wg.Done()
+
+	for s.running {
+		conn, err := s.listener.Accept()
+		if err != nil {
+			if s.running {
+				s.logger.Error().Err(err).Msg("Failed to accept connection")
+			}
+			return
+		}
+
+		s.mtx.Lock()
+		s.conn = conn
+		s.mtx.Unlock()
+
+		s.logger.Info().Msg("Client connected to audio output server")
+		// Start message processing for this connection
+		s.wg.Add(1)
+		go s.handleConnection(conn)
+	}
+}
+
+// handleConnection processes messages from a client connection
+func (s *AudioOutputServer) handleConnection(conn net.Conn) {
+	defer s.wg.Done()
+	defer conn.Close()
+
+	for s.running {
+		msg, err := s.readMessage(conn)
+		if err != nil {
+			if s.running {
+				s.logger.Error().Err(err).Msg("Failed to read message from client")
+			}
+			return
+		}
+
+		if err := s.processMessage(msg); err != nil {
+			s.logger.Error().Err(err).Msg("Failed to process message")
+		}
+	}
+}
+
+// readMessage reads a message from the connection
+func (s *AudioOutputServer) readMessage(conn net.Conn) (*OutputIPCMessage, error) {
+	header := make([]byte, 17)
+	if _, err := io.ReadFull(conn, header); err != nil {
+		return nil, fmt.Errorf("failed to read header: %w", err)
+	}
+
+	magic := binary.LittleEndian.Uint32(header[0:4])
+	if magic != s.magicNumber {
+		return nil, fmt.Errorf("invalid magic number: expected %d, got %d", s.magicNumber, magic)
+	}
+
+	msgType := OutputMessageType(header[4])
+	length := binary.LittleEndian.Uint32(header[5:9])
+	timestamp := int64(binary.LittleEndian.Uint64(header[9:17]))
+
+	var data []byte
+	if length > 0 {
+		data = make([]byte, length)
+		if _, err := io.ReadFull(conn, data); err != nil {
+			return nil, fmt.Errorf("failed to read data: %w", err)
+		}
+	}
+
+	return &OutputIPCMessage{
+		Magic:     magic,
+		Type:      msgType,
+		Length:    length,
+		Timestamp: timestamp,
+		Data:      data,
+	}, nil
+}
+
+// processMessage processes a received message
+func (s *AudioOutputServer) processMessage(msg *OutputIPCMessage) error {
+	switch msg.Type {
+	case OutputMessageTypeOpusConfig:
+		return s.processOpusConfig(msg.Data)
+	case OutputMessageTypeStop:
+		s.logger.Info().Msg("Received stop message")
+		return nil
+	case OutputMessageTypeHeartbeat:
+		s.logger.Debug().Msg("Received heartbeat")
+		return nil
+	default:
+		s.logger.Warn().Int("type", int(msg.Type)).Msg("Unknown message type")
+		return nil
+	}
+}
+
+// processOpusConfig processes Opus configuration updates
+func (s *AudioOutputServer) processOpusConfig(data []byte) error {
+	// Validate configuration data size (9 * int32 = 36 bytes)
+	if len(data) != 36 {
+		return fmt.Errorf("invalid Opus configuration data size: expected 36 bytes, got %d", len(data))
+	}
+
+	// Decode Opus configuration
+	config := OutputIPCOpusConfig{
+		SampleRate: int(binary.LittleEndian.Uint32(data[0:4])),
+		Channels:   int(binary.LittleEndian.Uint32(data[4:8])),
+		FrameSize:  int(binary.LittleEndian.Uint32(data[8:12])),
+		Bitrate:    int(binary.LittleEndian.Uint32(data[12:16])),
+		Complexity: int(binary.LittleEndian.Uint32(data[16:20])),
+		VBR:        int(binary.LittleEndian.Uint32(data[20:24])),
+		SignalType: int(binary.LittleEndian.Uint32(data[24:28])),
+		Bandwidth:  int(binary.LittleEndian.Uint32(data[28:32])),
+		DTX:        int(binary.LittleEndian.Uint32(data[32:36])),
+	}
+
+	s.logger.Info().Interface("config", config).Msg("Received Opus configuration update")
+
+	// Ensure we're running in the audio server subprocess
+	if !isAudioServerProcess() {
+		s.logger.Warn().Msg("Opus configuration update ignored - not running in audio server subprocess")
+		return nil
+	}
+
+	// Check if audio output streaming is currently active
+	if atomic.LoadInt32(&outputStreamingRunning) == 0 {
+		s.logger.Info().Msg("Audio output streaming not active, configuration will be applied when streaming starts")
+		return nil
+	}
+
+	// Ensure capture is initialized before updating encoder parameters
+	// The C function requires both encoder and capture_initialized to be true
+	if err := cgoAudioInit(); err != nil {
+		s.logger.Debug().Err(err).Msg("Audio capture already initialized or initialization failed")
+		// Continue anyway - capture may already be initialized
+	}
+
+	// Apply configuration using CGO function (only if audio system is running)
+	vbrConstraint := Config.CGOOpusVBRConstraint
+	if err := updateOpusEncoderParams(config.Bitrate, config.Complexity, config.VBR, vbrConstraint, config.SignalType, config.Bandwidth, config.DTX); err != nil {
+		s.logger.Error().Err(err).Msg("Failed to update Opus encoder parameters - encoder may not be initialized")
+		return err
+	}
+
+	s.logger.Info().Msg("Opus encoder parameters updated successfully")
+	return nil
+}
+
+// SendFrame sends an audio frame to the client
+func (s *AudioOutputServer) SendFrame(frame []byte) error {
+	s.mtx.Lock()
+	conn := s.conn
+	s.mtx.Unlock()
+
+	if conn == nil {
+		return fmt.Errorf("no client connected")
+	}
+
+	msg := &OutputIPCMessage{
+		Magic:     s.magicNumber,
+		Type:      OutputMessageTypeOpusFrame,
+		Length:    uint32(len(frame)),
+		Timestamp: time.Now().UnixNano(),
+		Data:      frame,
+	}
+
+	return s.writeMessage(conn, msg)
+}
+
+// writeMessage writes a message to the connection
+func (s *AudioOutputServer) writeMessage(conn net.Conn, msg *OutputIPCMessage) error {
+	header := EncodeMessageHeader(msg.Magic, uint8(msg.Type), msg.Length, msg.Timestamp)
+
+	if _, err := conn.Write(header); err != nil {
+		return fmt.Errorf("failed to write header: %w", err)
+	}
+
+	if msg.Length > 0 && msg.Data != nil {
+		if _, err := conn.Write(msg.Data); err != nil {
+			return fmt.Errorf("failed to write data: %w", err)
+		}
+	}
+
+	atomic.AddInt64(&s.totalFrames, 1)
+	return nil
+}
+
+func (s *AudioOutputServer) GetServerStats() (total, dropped int64, bufferSize int64) {
+	return atomic.LoadInt64(&s.totalFrames), atomic.LoadInt64(&s.droppedFrames), atomic.LoadInt64(&s.bufferSize)
+}
+
+// AudioOutputClient provides audio output IPC client functionality
+type AudioOutputClient struct {
+	// Atomic counters
+	droppedFrames int64 // Atomic counter for dropped frames
+	totalFrames   int64 // Atomic counter for total frames
+
+	conn        net.Conn
+	mtx         sync.Mutex
+	running     bool
+	logger      zerolog.Logger
+	socketPath  string
+	magicNumber uint32
+	bufferPool  *AudioBufferPool // Buffer pool for memory optimization
+
+	// Health monitoring
+	autoReconnect bool // Enable automatic reconnection
+}
 
 func NewAudioOutputClient() *AudioOutputClient {
-	return NewUnifiedAudioClient(false) // false = output client
+	socketPath := getOutputSocketPath()
+	logger := logging.GetDefaultLogger().With().Str("component", "audio-output-client").Logger()
+
+	return &AudioOutputClient{
+		socketPath:    socketPath,
+		magicNumber:   Config.OutputMagicNumber,
+		logger:        logger,
+		bufferPool:    NewAudioBufferPool(Config.MaxFrameSize),
+		autoReconnect: true,
+	}
 }
 
-// Connect method is now inherited from UnifiedAudioClient
+// Connect connects to the audio output server
+func (c *AudioOutputClient) Connect() error {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
 
-// Disconnect method is now inherited from UnifiedAudioClient
+	if c.running {
+		return fmt.Errorf("audio output client is already connected")
+	}
 
-// IsConnected method is now inherited from UnifiedAudioClient
+	conn, err := net.Dial("unix", c.socketPath)
+	if err != nil {
+		return fmt.Errorf("failed to connect to audio output server: %w", err)
+	}
 
-// Close method is now inherited from UnifiedAudioClient
+	c.conn = conn
+	c.running = true
+	c.logger.Info().Str("socket_path", c.socketPath).Msg("Connected to audio output server")
+	return nil
+}
+
+// Disconnect disconnects from the audio output server
+func (c *AudioOutputClient) Disconnect() {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+
+	if !c.running {
+		return
+	}
+
+	c.running = false
+
+	if c.conn != nil {
+		c.conn.Close()
+		c.conn = nil
+	}
+
+	c.logger.Info().Msg("Disconnected from audio output server")
+}
+
+// IsConnected returns whether the client is connected
+func (c *AudioOutputClient) IsConnected() bool {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+	return c.running && c.conn != nil
+}
 
 func (c *AudioOutputClient) ReceiveFrame() ([]byte, error) {
 	c.mtx.Lock()
@@ -95,7 +421,7 @@ func (c *AudioOutputClient) ReceiveFrame() ([]byte, error) {
 	}
 
 	size := binary.LittleEndian.Uint32(optMsg.header[5:9])
-	maxFrameSize := GetConfig().OutputMaxFrameSize
+	maxFrameSize := Config.OutputMaxFrameSize
 	if int(size) > maxFrameSize {
 		return nil, fmt.Errorf("received frame size validation failed: got %d bytes, maximum allowed %d bytes", size, maxFrameSize)
 	}
@@ -116,6 +442,53 @@ func (c *AudioOutputClient) ReceiveFrame() ([]byte, error) {
 	return frame, nil
 }
 
+// SendOpusConfig sends Opus configuration to the audio output server
+func (c *AudioOutputClient) SendOpusConfig(config OutputIPCOpusConfig) error {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+
+	if !c.running || c.conn == nil {
+		return fmt.Errorf("not connected to audio output server")
+	}
+
+	// Validate configuration parameters
+	if config.SampleRate <= 0 || config.Channels <= 0 || config.FrameSize <= 0 || config.Bitrate <= 0 {
+		return fmt.Errorf("invalid Opus configuration: SampleRate=%d, Channels=%d, FrameSize=%d, Bitrate=%d",
+			config.SampleRate, config.Channels, config.FrameSize, config.Bitrate)
+	}
+
+	// Serialize Opus configuration using common function
+	data := EncodeOpusConfig(config.SampleRate, config.Channels, config.FrameSize, config.Bitrate, config.Complexity, config.VBR, config.SignalType, config.Bandwidth, config.DTX)
+
+	msg := &OutputIPCMessage{
+		Magic:     c.magicNumber,
+		Type:      OutputMessageTypeOpusConfig,
+		Length:    uint32(len(data)),
+		Timestamp: time.Now().UnixNano(),
+		Data:      data,
+	}
+
+	return c.writeMessage(msg)
+}
+
+// writeMessage writes a message to the connection
+func (c *AudioOutputClient) writeMessage(msg *OutputIPCMessage) error {
+	header := EncodeMessageHeader(msg.Magic, uint8(msg.Type), msg.Length, msg.Timestamp)
+
+	if _, err := c.conn.Write(header); err != nil {
+		return fmt.Errorf("failed to write header: %w", err)
+	}
+
+	if msg.Length > 0 && msg.Data != nil {
+		if _, err := c.conn.Write(msg.Data); err != nil {
+			return fmt.Errorf("failed to write data: %w", err)
+		}
+	}
+
+	atomic.AddInt64(&c.totalFrames, 1)
+	return nil
+}
+
 // GetClientStats returns client performance statistics
 func (c *AudioOutputClient) GetClientStats() (total, dropped int64) {
 	stats := GetFrameStats(&c.totalFrames, &c.droppedFrames)
@@ -123,5 +496,4 @@ func (c *AudioOutputClient) GetClientStats() (total, dropped int64) {
 }
 
 // Helper functions
-
+// getOutputSocketPath is defined in ipc_unified.go
-// getOutputSocketPath is now defined in unified_ipc.go

internal/audio/ipc_unified.go

@@ -4,9 +4,11 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io"
+	"math"
 	"net"
 	"os"
 	"path/filepath"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -17,13 +19,21 @@ import (
 
 // Unified IPC constants
 var (
-	outputMagicNumber uint32 = GetConfig().OutputMagicNumber // "JKOU" (JetKVM Output)
+	outputMagicNumber uint32 = Config.OutputMagicNumber // "JKOU" (JetKVM Output)
-	inputMagicNumber  uint32 = GetConfig().InputMagicNumber  // "JKMI" (JetKVM Microphone Input)
+	inputMagicNumber  uint32 = Config.InputMagicNumber  // "JKMI" (JetKVM Microphone Input)
 	outputSocketName         = "audio_output.sock"
 	inputSocketName          = "audio_input.sock"
 	headerSize               = 17 // Fixed header size: 4+1+4+8 bytes
 )
 
+// Header buffer pool to reduce allocation overhead
+var headerBufferPool = sync.Pool{
+	New: func() interface{} {
+		buf := make([]byte, headerSize)
+		return &buf
+	},
+}
+
 // UnifiedMessageType represents the type of IPC message for both input and output
 type UnifiedMessageType uint8
 
@@ -89,7 +99,6 @@ type UnifiedIPCOpusConfig struct {
 // UnifiedAudioServer provides common functionality for both input and output servers
 type UnifiedAudioServer struct {
 	// Atomic counters for performance monitoring
-	bufferSize    int64 // Current buffer size (atomic)
 	droppedFrames int64 // Dropped frames counter (atomic)
 	totalFrames   int64 // Total frames counter (atomic)
 
@@ -108,10 +117,6 @@ type UnifiedAudioServer struct {
 	socketPath         string
 	magicNumber        uint32
 	socketBufferConfig SocketBufferConfig
-
-	// Performance monitoring
-	latencyMonitor    *LatencyMonitor
-	adaptiveOptimizer *AdaptiveOptimizer
 }
 
 // NewUnifiedAudioServer creates a new unified audio server
@@ -136,11 +141,9 @@ func NewUnifiedAudioServer(isInput bool) (*UnifiedAudioServer, error) {
 		logger:             logger,
 		socketPath:         socketPath,
 		magicNumber:        magicNumber,
-		messageChan:        make(chan *UnifiedIPCMessage, GetConfig().ChannelBufferSize),
+		messageChan:        make(chan *UnifiedIPCMessage, Config.ChannelBufferSize),
-		processChan:        make(chan *UnifiedIPCMessage, GetConfig().ChannelBufferSize),
+		processChan:        make(chan *UnifiedIPCMessage, Config.ChannelBufferSize),
 		socketBufferConfig: DefaultSocketBufferConfig(),
-		latencyMonitor:     nil,
-		adaptiveOptimizer:  nil,
 	}
 
 	return server, nil
@@ -155,15 +158,38 @@ func (s *UnifiedAudioServer) Start() error {
 		return fmt.Errorf("server already running")
 	}
 
-	// Remove existing socket file
+	// Remove existing socket file with retry logic
+	for i := 0; i < 3; i++ {
 		if err := os.Remove(s.socketPath); err != nil && !os.IsNotExist(err) {
-		return fmt.Errorf("failed to remove existing socket: %w", err)
+			s.logger.Warn().Err(err).Int("attempt", i+1).Msg("failed to remove existing socket file, retrying")
+			time.Sleep(100 * time.Millisecond)
+			continue
+		}
+		break
+	}
+
+	// Create listener with retry on address already in use
+	var listener net.Listener
+	var err error
+	for i := 0; i < 3; i++ {
+		listener, err = net.Listen("unix", s.socketPath)
+		if err == nil {
+			break
+		}
+
+		// If address is still in use, try to remove socket file again
+		if strings.Contains(err.Error(), "address already in use") {
+			s.logger.Warn().Err(err).Int("attempt", i+1).Msg("socket address in use, attempting cleanup and retry")
+			os.Remove(s.socketPath)
+			time.Sleep(200 * time.Millisecond)
+			continue
+		}
+
+		return fmt.Errorf("failed to create unix socket: %w", err)
 	}
 
-	// Create listener
-	listener, err := net.Listen("unix", s.socketPath)
 	if err != nil {
-		return fmt.Errorf("failed to create listener: %w", err)
+		return fmt.Errorf("failed to create unix socket after retries: %w", err)
 	}
 
 	s.listener = listener
@@ -283,8 +309,11 @@ func (s *UnifiedAudioServer) startProcessorGoroutine() {
 
 // readMessage reads a message from the connection
 func (s *UnifiedAudioServer) readMessage(conn net.Conn) (*UnifiedIPCMessage, error) {
-	// Read header
+	// Get header buffer from pool
-	header := make([]byte, headerSize)
+	headerPtr := headerBufferPool.Get().(*[]byte)
+	header := *headerPtr
+	defer headerBufferPool.Put(headerPtr)
+
 	if _, err := io.ReadFull(conn, header); err != nil {
 		return nil, fmt.Errorf("failed to read header: %w", err)
 	}
@@ -300,7 +329,7 @@ func (s *UnifiedAudioServer) readMessage(conn net.Conn) (*UnifiedIPCMessage, err
 	timestamp := int64(binary.LittleEndian.Uint64(header[9:17]))
 
 	// Validate length
-	if length > uint32(GetConfig().MaxFrameSize) {
+	if length > uint32(Config.MaxFrameSize) {
 		return nil, fmt.Errorf("message too large: %d bytes", length)
 	}
 
@@ -328,7 +357,10 @@ func (s *UnifiedAudioServer) SendFrame(frame []byte) error {
 	defer s.mtx.Unlock()
 
 	if !s.running || s.conn == nil {
-		return fmt.Errorf("no client connected")
+		// Silently drop frames when no client is connected
+		// This prevents "no client connected" warnings during startup and quality changes
+		atomic.AddInt64(&s.droppedFrames, 1)
+		return nil // Return nil to avoid flooding logs with connection warnings
 	}
 
 	start := time.Now()
@@ -350,10 +382,6 @@ func (s *UnifiedAudioServer) SendFrame(frame []byte) error {
 	}
 
 	// Record latency for monitoring
-	if s.latencyMonitor != nil {
-		writeLatency := time.Since(start)
-		s.latencyMonitor.RecordLatency(writeLatency, "ipc_write")
-	}
 
 	atomic.AddInt64(&s.totalFrames, 1)
 	return nil
@@ -361,22 +389,21 @@ func (s *UnifiedAudioServer) SendFrame(frame []byte) error {
 
 // writeMessage writes a message to the connection
 func (s *UnifiedAudioServer) writeMessage(conn net.Conn, msg *UnifiedIPCMessage) error {
-	// Write header
+	header := EncodeMessageHeader(msg.Magic, uint8(msg.Type), msg.Length, msg.Timestamp)
-	header := make([]byte, headerSize)
-	binary.LittleEndian.PutUint32(header[0:4], msg.Magic)
-	header[4] = uint8(msg.Type)
-	binary.LittleEndian.PutUint32(header[5:9], msg.Length)
-	binary.LittleEndian.PutUint64(header[9:17], uint64(msg.Timestamp))
 
+	// Optimize: Use single write for header+data to reduce system calls
+	if msg.Length > 0 && msg.Data != nil {
+		// Pre-allocate combined buffer to avoid copying
+		combined := make([]byte, len(header)+len(msg.Data))
+		copy(combined, header)
+		copy(combined[len(header):], msg.Data)
+		if _, err := conn.Write(combined); err != nil {
+			return fmt.Errorf("failed to write message: %w", err)
+		}
+	} else {
 		if _, err := conn.Write(header); err != nil {
 			return fmt.Errorf("failed to write header: %w", err)
 		}
-
-	// Write data if present
-	if msg.Length > 0 && msg.Data != nil {
-		if _, err := conn.Write(msg.Data); err != nil {
-			return fmt.Errorf("failed to write data: %w", err)
-		}
 	}
 
 	return nil
@@ -384,7 +411,7 @@ func (s *UnifiedAudioServer) writeMessage(conn net.Conn, msg *UnifiedIPCMessage)
 
 // UnifiedAudioClient provides common functionality for both input and output clients
 type UnifiedAudioClient struct {
-	// Atomic fields first for ARM32 alignment
+	// Atomic counters for frame statistics
 	droppedFrames int64 // Atomic counter for dropped frames
 	totalFrames   int64 // Atomic counter for total frames
 
@@ -395,6 +422,13 @@ type UnifiedAudioClient struct {
 	socketPath  string
 	magicNumber uint32
 	bufferPool  *AudioBufferPool // Buffer pool for memory optimization
+
+	// Connection health monitoring
+	lastHealthCheck   time.Time
+	connectionErrors  int64 // Atomic counter for connection errors
+	autoReconnect     bool  // Enable automatic reconnection
+	healthCheckTicker *time.Ticker
+	stopHealthCheck   chan struct{}
 }
 
 // NewUnifiedAudioClient creates a new unified audio client
@@ -419,7 +453,9 @@ func NewUnifiedAudioClient(isInput bool) *UnifiedAudioClient {
 		logger:          logger,
 		socketPath:      socketPath,
 		magicNumber:     magicNumber,
-		bufferPool:  NewAudioBufferPool(GetConfig().MaxFrameSize),
+		bufferPool:      NewAudioBufferPool(Config.MaxFrameSize),
+		autoReconnect:   true, // Enable automatic reconnection by default
+		stopHealthCheck: make(chan struct{}),
 	}
 }
 
@@ -439,32 +475,46 @@ func (c *UnifiedAudioClient) Connect() error {
 	}
 
 	// Try connecting multiple times as the server might not be ready
-	// Reduced retry count and delay for faster startup
+	// Use configurable retry parameters for better control
-	for i := 0; i < 10; i++ {
+	maxAttempts := Config.MaxConnectionAttempts
-		conn, err := net.Dial("unix", c.socketPath)
+	initialDelay := Config.ConnectionRetryDelay
+	maxDelay := Config.MaxConnectionRetryDelay
+	backoffFactor := Config.ConnectionBackoffFactor
+
+	for i := 0; i < maxAttempts; i++ {
+		// Set connection timeout for each attempt
+		conn, err := net.DialTimeout("unix", c.socketPath, Config.ConnectionTimeoutDelay)
 		if err == nil {
 			c.conn = conn
 			c.running = true
 			// Reset frame counters on successful connection
 			atomic.StoreInt64(&c.totalFrames, 0)
 			atomic.StoreInt64(&c.droppedFrames, 0)
-			c.logger.Info().Str("socket_path", c.socketPath).Msg("Connected to server")
+			atomic.StoreInt64(&c.connectionErrors, 0)
+			c.lastHealthCheck = time.Now()
+			// Start health check monitoring if auto-reconnect is enabled
+			if c.autoReconnect {
+				c.startHealthCheck()
+			}
+			c.logger.Info().Str("socket_path", c.socketPath).Int("attempt", i+1).Msg("Connected to server")
 			return nil
 		}
-		// Exponential backoff starting from config
+
-		backoffStart := GetConfig().BackoffStart
+		// Log connection attempt failure
-		delay := time.Duration(backoffStart.Nanoseconds()*(1<<uint(i/3))) * time.Nanosecond
+		c.logger.Debug().Err(err).Str("socket_path", c.socketPath).Int("attempt", i+1).Int("max_attempts", maxAttempts).Msg("Connection attempt failed")
-		maxDelay := GetConfig().MaxRetryDelay
+
-		if delay > maxDelay {
+		// Don't sleep after the last attempt
-			delay = maxDelay
+		if i < maxAttempts-1 {
-		}
+			// Calculate adaptive delay based on connection failure patterns
+			delay := c.calculateAdaptiveDelay(i, initialDelay, maxDelay, backoffFactor)
 			time.Sleep(delay)
 		}
+	}
 
 	// Ensure clean state on connection failure
 	c.conn = nil
 	c.running = false
-	return fmt.Errorf("failed to connect to audio server after 10 attempts")
+	return fmt.Errorf("failed to connect to audio server after %d attempts", Config.MaxConnectionAttempts)
 }
 
 // Disconnect disconnects the client from the server
@@ -478,6 +528,9 @@ func (c *UnifiedAudioClient) Disconnect() {
 
 	c.running = false
 
+	// Stop health check monitoring
+	c.stopHealthCheckMonitoring()
+
 	if c.conn != nil {
 		c.conn.Close()
 		c.conn = nil
@@ -497,14 +550,129 @@ func (c *UnifiedAudioClient) IsConnected() bool {
 func (c *UnifiedAudioClient) GetFrameStats() (total, dropped int64) {
 	total = atomic.LoadInt64(&c.totalFrames)
 	dropped = atomic.LoadInt64(&c.droppedFrames)
-	return total, dropped
+	return
+}
+
+// startHealthCheck starts the connection health monitoring
+func (c *UnifiedAudioClient) startHealthCheck() {
+	if c.healthCheckTicker != nil {
+		c.healthCheckTicker.Stop()
+	}
+
+	c.healthCheckTicker = time.NewTicker(Config.HealthCheckInterval)
+	go func() {
+		for {
+			select {
+			case <-c.healthCheckTicker.C:
+				c.performHealthCheck()
+			case <-c.stopHealthCheck:
+				return
+			}
+		}
+	}()
+}
+
+// stopHealthCheckMonitoring stops the health check monitoring
+func (c *UnifiedAudioClient) stopHealthCheckMonitoring() {
+	if c.healthCheckTicker != nil {
+		c.healthCheckTicker.Stop()
+		c.healthCheckTicker = nil
+	}
+	select {
+	case c.stopHealthCheck <- struct{}{}:
+	default:
+	}
+}
+
+// performHealthCheck checks the connection health and attempts reconnection if needed
+func (c *UnifiedAudioClient) performHealthCheck() {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+
+	if !c.running || c.conn == nil {
+		return
+	}
+
+	// Simple health check: try to get connection info
+	if tcpConn, ok := c.conn.(*net.UnixConn); ok {
+		if _, err := tcpConn.File(); err != nil {
+			// Connection is broken
+			atomic.AddInt64(&c.connectionErrors, 1)
+			c.logger.Warn().Err(err).Msg("Connection health check failed, attempting reconnection")
+
+			// Close the broken connection
+			c.conn.Close()
+			c.conn = nil
+			c.running = false
+
+			// Attempt reconnection
+			go func() {
+				time.Sleep(Config.ReconnectionInterval)
+				if err := c.Connect(); err != nil {
+					c.logger.Error().Err(err).Msg("Failed to reconnect during health check")
+				}
+			}()
+		}
+	}
+
+	c.lastHealthCheck = time.Now()
+}
+
+// SetAutoReconnect enables or disables automatic reconnection
+func (c *UnifiedAudioClient) SetAutoReconnect(enabled bool) {
+	c.mtx.Lock()
+	defer c.mtx.Unlock()
+
+	c.autoReconnect = enabled
+	if !enabled {
+		c.stopHealthCheckMonitoring()
+	} else if c.running {
+		c.startHealthCheck()
+	}
+}
+
+// GetConnectionErrors returns the number of connection errors
+func (c *UnifiedAudioClient) GetConnectionErrors() int64 {
+	return atomic.LoadInt64(&c.connectionErrors)
+}
+
+// calculateAdaptiveDelay calculates retry delay based on system load and failure patterns
+func (c *UnifiedAudioClient) calculateAdaptiveDelay(attempt int, initialDelay, maxDelay time.Duration, backoffFactor float64) time.Duration {
+	// Base exponential backoff
+	baseDelay := time.Duration(float64(initialDelay.Nanoseconds()) * math.Pow(backoffFactor, float64(attempt)))
+
+	// Get connection error history for adaptive adjustment
+	errorCount := atomic.LoadInt64(&c.connectionErrors)
+
+	// Adjust delay based on recent connection errors
+	// More errors = longer delays to avoid overwhelming the server
+	adaptiveFactor := 1.0
+	if errorCount > 5 {
+		adaptiveFactor = 1.5 // 50% longer delays after many errors
+	} else if errorCount > 10 {
+		adaptiveFactor = 2.0 // Double delays after excessive errors
+	}
+
+	// Apply adaptive factor
+	adaptiveDelay := time.Duration(float64(baseDelay.Nanoseconds()) * adaptiveFactor)
+
+	// Ensure we don't exceed maximum delay
+	if adaptiveDelay > maxDelay {
+		adaptiveDelay = maxDelay
+	}
+
+	// Add small random jitter to avoid thundering herd
+	jitter := time.Duration(float64(adaptiveDelay.Nanoseconds()) * 0.1 * (0.5 + float64(attempt%3)/6.0))
+	adaptiveDelay += jitter
+
+	return adaptiveDelay
 }
 
 // Helper functions for socket paths
 func getInputSocketPath() string {
-	return filepath.Join(os.TempDir(), inputSocketName)
+	return filepath.Join("/var/run", inputSocketName)
 }
 
 func getOutputSocketPath() string {
-	return filepath.Join(os.TempDir(), outputSocketName)
+	return filepath.Join("/var/run", outputSocketName)
 }

internal/audio/mgmt_base_supervisor.go

@@ -28,7 +28,6 @@ type BaseSupervisor struct {
 	processPID int
 
 	// Process monitoring
-	processMonitor *ProcessMonitor
 
 	// Exit tracking
 	lastExitCode int
@@ -46,7 +45,7 @@ func NewBaseSupervisor(componentName string) *BaseSupervisor {
 	logger := logging.GetDefaultLogger().With().Str("component", componentName).Logger()
 	return &BaseSupervisor{
 		logger: &logger,
-		processMonitor: GetProcessMonitor(),
+
 		stopChan:    make(chan struct{}),
 		processDone: make(chan struct{}),
 	}
@@ -211,7 +210,6 @@ func (bs *BaseSupervisor) waitForProcessExit(processType string) {
 	bs.mutex.Unlock()
 
 	// Remove process from monitoring
-	bs.processMonitor.RemoveProcess(pid)
 
 	if exitCode != 0 {
 		bs.logger.Error().Int("pid", pid).Int("exit_code", exitCode).Msgf("%s process exited with error", processType)

internal/audio/mgmt_input_ipc_manager.go

@@ -32,7 +32,7 @@ type AudioInputIPCManager struct {
 // NewAudioInputIPCManager creates a new IPC-based audio input manager
 func NewAudioInputIPCManager() *AudioInputIPCManager {
 	return &AudioInputIPCManager{
-		supervisor: NewAudioInputSupervisor(),
+		supervisor: GetAudioInputSupervisor(), // Use global shared supervisor
 		logger:     logging.GetDefaultLogger().With().Str("component", AudioInputIPCComponent).Logger(),
 	}
 }
@@ -63,9 +63,9 @@ func (aim *AudioInputIPCManager) Start() error {
 	}
 
 	config := InputIPCConfig{
-		SampleRate: GetConfig().InputIPCSampleRate,
+		SampleRate: Config.InputIPCSampleRate,
-		Channels:   GetConfig().InputIPCChannels,
+		Channels:   Config.InputIPCChannels,
-		FrameSize:  GetConfig().InputIPCFrameSize,
+		FrameSize:  Config.InputIPCFrameSize,
 	}
 
 	// Validate configuration before using it
@@ -80,7 +80,7 @@ func (aim *AudioInputIPCManager) Start() error {
 	}
 
 	// Wait for subprocess readiness
-	time.Sleep(GetConfig().LongSleepDuration)
+	time.Sleep(Config.LongSleepDuration)
 
 	err = aim.supervisor.SendConfig(config)
 	if err != nil {

internal/audio/mgmt_output_ipc_manager.go

@@ -57,9 +57,9 @@ func (aom *AudioOutputIPCManager) Start() error {
 
 	// Send initial configuration
 	config := OutputIPCConfig{
-		SampleRate: GetConfig().SampleRate,
+		SampleRate: Config.SampleRate,
-		Channels:   GetConfig().Channels,
+		Channels:   Config.Channels,
-		FrameSize:  int(GetConfig().AudioQualityMediumFrameSize.Milliseconds()),
+		FrameSize:  int(Config.AudioQualityMediumFrameSize.Milliseconds()),
 	}
 
 	if err := aom.SendConfig(config); err != nil {

internal/audio/mic_contention.go

@@ -105,7 +105,7 @@ func GetMicrophoneContentionManager() *MicrophoneContentionManager {
 	}
 
 	if atomic.CompareAndSwapInt32(&micContentionInitialized, 0, 1) {
-		manager := NewMicrophoneContentionManager(GetConfig().MicContentionTimeout)
+		manager := NewMicrophoneContentionManager(Config.MicContentionTimeout)
 		atomic.StorePointer(&globalMicContentionManager, unsafe.Pointer(manager))
 		return manager
 	}
@@ -115,7 +115,7 @@ func GetMicrophoneContentionManager() *MicrophoneContentionManager {
 		return (*MicrophoneContentionManager)(ptr)
 	}
 
-	return NewMicrophoneContentionManager(GetConfig().MicContentionTimeout)
+	return NewMicrophoneContentionManager(Config.MicContentionTimeout)
 }
 
 func TryMicrophoneOperation() OperationResult {

internal/audio/monitor_adaptive_optimizer.go

@@ -1,198 +0,0 @@
-package audio
-
-import (
-	"context"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/rs/zerolog"
-)
-
-// AdaptiveOptimizer automatically adjusts audio parameters based on latency metrics
-type AdaptiveOptimizer struct {
-	// Atomic fields MUST be first for ARM32 alignment (int64 fields need 8-byte alignment)
-	optimizationCount int64 // Number of optimizations performed (atomic)
-	lastOptimization  int64 // Timestamp of last optimization (atomic)
-	optimizationLevel int64 // Current optimization level (0-10) (atomic)
-
-	latencyMonitor *LatencyMonitor
-	bufferManager  *AdaptiveBufferManager
-	logger         zerolog.Logger
-
-	// Control channels
-	ctx    context.Context
-	cancel context.CancelFunc
-	wg     sync.WaitGroup
-
-	// Configuration
-	config OptimizerConfig
-}
-
-// OptimizerConfig holds configuration for the adaptive optimizer
-type OptimizerConfig struct {
-	MaxOptimizationLevel int           // Maximum optimization level (0-10)
-	CooldownPeriod       time.Duration // Minimum time between optimizations
-	Aggressiveness       float64       // How aggressively to optimize (0.0-1.0)
-	RollbackThreshold    time.Duration // Latency threshold to rollback optimizations
-	StabilityPeriod      time.Duration // Time to wait for stability after optimization
-}
-
-// DefaultOptimizerConfig returns a sensible default configuration
-func DefaultOptimizerConfig() OptimizerConfig {
-	return OptimizerConfig{
-		MaxOptimizationLevel: 8,
-		CooldownPeriod:       GetConfig().CooldownPeriod,
-		Aggressiveness:       GetConfig().OptimizerAggressiveness,
-		RollbackThreshold:    GetConfig().RollbackThreshold,
-		StabilityPeriod:      GetConfig().AdaptiveOptimizerStability,
-	}
-}
-
-// NewAdaptiveOptimizer creates a new adaptive optimizer
-func NewAdaptiveOptimizer(latencyMonitor *LatencyMonitor, bufferManager *AdaptiveBufferManager, config OptimizerConfig, logger zerolog.Logger) *AdaptiveOptimizer {
-	ctx, cancel := context.WithCancel(context.Background())
-
-	optimizer := &AdaptiveOptimizer{
-		latencyMonitor: latencyMonitor,
-		bufferManager:  bufferManager,
-		config:         config,
-		logger:         logger.With().Str("component", "adaptive-optimizer").Logger(),
-		ctx:            ctx,
-		cancel:         cancel,
-	}
-
-	// Register as latency monitor callback
-	latencyMonitor.AddOptimizationCallback(optimizer.handleLatencyOptimization)
-
-	return optimizer
-}
-
-// Start begins the adaptive optimization process
-func (ao *AdaptiveOptimizer) Start() {
-	ao.wg.Add(1)
-	go ao.optimizationLoop()
-	ao.logger.Debug().Msg("adaptive optimizer started")
-}
-
-// Stop stops the adaptive optimizer
-func (ao *AdaptiveOptimizer) Stop() {
-	ao.cancel()
-	ao.wg.Wait()
-	ao.logger.Debug().Msg("adaptive optimizer stopped")
-}
-
-// initializeStrategies sets up the available optimization strategies
-
-// handleLatencyOptimization is called when latency optimization is needed
-func (ao *AdaptiveOptimizer) handleLatencyOptimization(metrics LatencyMetrics) error {
-	currentLevel := atomic.LoadInt64(&ao.optimizationLevel)
-	lastOpt := atomic.LoadInt64(&ao.lastOptimization)
-
-	// Check cooldown period
-	if time.Since(time.Unix(0, lastOpt)) < ao.config.CooldownPeriod {
-		return nil
-	}
-
-	// Determine if we need to increase or decrease optimization level
-	targetLevel := ao.calculateTargetOptimizationLevel(metrics)
-
-	if targetLevel > currentLevel {
-		return ao.increaseOptimization(int(targetLevel))
-	} else if targetLevel < currentLevel {
-		return ao.decreaseOptimization(int(targetLevel))
-	}
-
-	return nil
-}
-
-// calculateTargetOptimizationLevel determines the appropriate optimization level
-func (ao *AdaptiveOptimizer) calculateTargetOptimizationLevel(metrics LatencyMetrics) int64 {
-	// Base calculation on current latency vs target
-	latencyRatio := float64(metrics.Current) / float64(GetConfig().AdaptiveOptimizerLatencyTarget) // 50ms target
-
-	// Adjust based on trend
-	switch metrics.Trend {
-	case LatencyTrendIncreasing:
-		latencyRatio *= 1.2 // Be more aggressive
-	case LatencyTrendDecreasing:
-		latencyRatio *= 0.8 // Be less aggressive
-	case LatencyTrendVolatile:
-		latencyRatio *= 1.1 // Slightly more aggressive
-	}
-
-	// Apply aggressiveness factor
-	latencyRatio *= ao.config.Aggressiveness
-
-	// Convert to optimization level
-	targetLevel := int64(latencyRatio * GetConfig().LatencyScalingFactor) // Scale to 0-10 range
-	if targetLevel > int64(ao.config.MaxOptimizationLevel) {
-		targetLevel = int64(ao.config.MaxOptimizationLevel)
-	}
-	if targetLevel < 0 {
-		targetLevel = 0
-	}
-
-	return targetLevel
-}
-
-// increaseOptimization applies optimization strategies up to the target level
-func (ao *AdaptiveOptimizer) increaseOptimization(targetLevel int) error {
-	atomic.StoreInt64(&ao.optimizationLevel, int64(targetLevel))
-	atomic.StoreInt64(&ao.lastOptimization, time.Now().UnixNano())
-	atomic.AddInt64(&ao.optimizationCount, 1)
-
-	return nil
-}
-
-// decreaseOptimization rolls back optimization strategies to the target level
-func (ao *AdaptiveOptimizer) decreaseOptimization(targetLevel int) error {
-	atomic.StoreInt64(&ao.optimizationLevel, int64(targetLevel))
-	atomic.StoreInt64(&ao.lastOptimization, time.Now().UnixNano())
-
-	return nil
-}
-
-// optimizationLoop runs the main optimization monitoring loop
-func (ao *AdaptiveOptimizer) optimizationLoop() {
-	defer ao.wg.Done()
-
-	ticker := time.NewTicker(ao.config.StabilityPeriod)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ao.ctx.Done():
-			return
-		case <-ticker.C:
-			ao.checkStability()
-		}
-	}
-}
-
-// checkStability monitors system stability and rolls back if needed
-func (ao *AdaptiveOptimizer) checkStability() {
-	metrics := ao.latencyMonitor.GetMetrics()
-
-	// Check if we need to rollback due to excessive latency
-	if metrics.Current > ao.config.RollbackThreshold {
-		currentLevel := int(atomic.LoadInt64(&ao.optimizationLevel))
-		if currentLevel > 0 {
-			ao.logger.Warn().Dur("current_latency", metrics.Current).Dur("threshold", ao.config.RollbackThreshold).Msg("rolling back optimizations due to excessive latency")
-			if err := ao.decreaseOptimization(currentLevel - 1); err != nil {
-				ao.logger.Error().Err(err).Msg("failed to decrease optimization level")
-			}
-		}
-	}
-}
-
-// GetOptimizationStats returns current optimization statistics
-func (ao *AdaptiveOptimizer) GetOptimizationStats() map[string]interface{} {
-	return map[string]interface{}{
-		"optimization_level": atomic.LoadInt64(&ao.optimizationLevel),
-		"optimization_count": atomic.LoadInt64(&ao.optimizationCount),
-		"last_optimization":  time.Unix(0, atomic.LoadInt64(&ao.lastOptimization)),
-	}
-}
-
-// Strategy implementation methods (stubs for now)

internal/audio/monitor_goroutine.go

@@ -1,144 +0,0 @@
-package audio
-
-import (
-	"runtime"
-	"sync/atomic"
-	"time"
-
-	"github.com/jetkvm/kvm/internal/logging"
-)
-
-// GoroutineMonitor tracks goroutine count and provides cleanup mechanisms
-type GoroutineMonitor struct {
-	baselineCount   int
-	peakCount       int
-	lastCount       int
-	monitorInterval time.Duration
-	lastCheck       time.Time
-	enabled         int32
-}
-
-// Global goroutine monitor instance
-var globalGoroutineMonitor *GoroutineMonitor
-
-// NewGoroutineMonitor creates a new goroutine monitor
-func NewGoroutineMonitor(monitorInterval time.Duration) *GoroutineMonitor {
-	if monitorInterval <= 0 {
-		monitorInterval = 30 * time.Second
-	}
-
-	// Get current goroutine count as baseline
-	baselineCount := runtime.NumGoroutine()
-
-	return &GoroutineMonitor{
-		baselineCount:   baselineCount,
-		peakCount:       baselineCount,
-		lastCount:       baselineCount,
-		monitorInterval: monitorInterval,
-		lastCheck:       time.Now(),
-	}
-}
-
-// Start begins goroutine monitoring
-func (gm *GoroutineMonitor) Start() {
-	if !atomic.CompareAndSwapInt32(&gm.enabled, 0, 1) {
-		return // Already running
-	}
-
-	go gm.monitorLoop()
-}
-
-// Stop stops goroutine monitoring
-func (gm *GoroutineMonitor) Stop() {
-	atomic.StoreInt32(&gm.enabled, 0)
-}
-
-// monitorLoop periodically checks goroutine count
-func (gm *GoroutineMonitor) monitorLoop() {
-	logger := logging.GetDefaultLogger().With().Str("component", "goroutine-monitor").Logger()
-	logger.Info().Int("baseline", gm.baselineCount).Msg("goroutine monitor started")
-
-	for atomic.LoadInt32(&gm.enabled) == 1 {
-		time.Sleep(gm.monitorInterval)
-		gm.checkGoroutineCount()
-	}
-
-	logger.Info().Msg("goroutine monitor stopped")
-}
-
-// checkGoroutineCount checks current goroutine count and logs if it exceeds thresholds
-func (gm *GoroutineMonitor) checkGoroutineCount() {
-	currentCount := runtime.NumGoroutine()
-	gm.lastCount = currentCount
-
-	// Update peak count if needed
-	if currentCount > gm.peakCount {
-		gm.peakCount = currentCount
-	}
-
-	// Calculate growth since baseline
-	growth := currentCount - gm.baselineCount
-	growthPercent := float64(growth) / float64(gm.baselineCount) * 100
-
-	// Log warning if growth exceeds thresholds
-	logger := logging.GetDefaultLogger().With().Str("component", "goroutine-monitor").Logger()
-
-	// Different log levels based on growth severity
-	if growthPercent > 30 {
-		// Severe growth - trigger cleanup
-		logger.Warn().Int("current", currentCount).Int("baseline", gm.baselineCount).
-			Int("growth", growth).Float64("growth_percent", growthPercent).
-			Msg("excessive goroutine growth detected - triggering cleanup")
-
-		// Force garbage collection to clean up unused resources
-		runtime.GC()
-
-		// Force cleanup of goroutine buffer cache
-		cleanupGoroutineCache()
-	} else if growthPercent > 20 {
-		// Moderate growth - just log warning
-		logger.Warn().Int("current", currentCount).Int("baseline", gm.baselineCount).
-			Int("growth", growth).Float64("growth_percent", growthPercent).
-			Msg("significant goroutine growth detected")
-	} else if growthPercent > 10 {
-		// Minor growth - log info
-		logger.Info().Int("current", currentCount).Int("baseline", gm.baselineCount).
-			Int("growth", growth).Float64("growth_percent", growthPercent).
-			Msg("goroutine growth detected")
-	}
-
-	// Update last check time
-	gm.lastCheck = time.Now()
-}
-
-// GetGoroutineStats returns current goroutine statistics
-func (gm *GoroutineMonitor) GetGoroutineStats() map[string]interface{} {
-	return map[string]interface{}{
-		"current_count":  gm.lastCount,
-		"baseline_count": gm.baselineCount,
-		"peak_count":     gm.peakCount,
-		"growth":         gm.lastCount - gm.baselineCount,
-		"growth_percent": float64(gm.lastCount-gm.baselineCount) / float64(gm.baselineCount) * 100,
-		"last_check":     gm.lastCheck,
-	}
-}
-
-// GetGoroutineMonitor returns the global goroutine monitor instance
-func GetGoroutineMonitor() *GoroutineMonitor {
-	if globalGoroutineMonitor == nil {
-		globalGoroutineMonitor = NewGoroutineMonitor(GetConfig().GoroutineMonitorInterval)
-	}
-	return globalGoroutineMonitor
-}
-
-// StartGoroutineMonitoring starts the global goroutine monitor
-func StartGoroutineMonitoring() {
-	// Goroutine monitoring disabled
-}
-
-// StopGoroutineMonitoring stops the global goroutine monitor
-func StopGoroutineMonitoring() {
-	if globalGoroutineMonitor != nil {
-		globalGoroutineMonitor.Stop()
-	}
-}

internal/audio/monitor_latency.go

@@ -1,333 +0,0 @@
-package audio
-
-import (
-	"context"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/rs/zerolog"
-)
-
-// LatencyMonitor tracks and optimizes audio latency in real-time
-type LatencyMonitor struct {
-	// Atomic fields MUST be first for ARM32 alignment (int64 fields need 8-byte alignment)
-	currentLatency    int64 // Current latency in nanoseconds (atomic)
-	averageLatency    int64 // Rolling average latency in nanoseconds (atomic)
-	minLatency        int64 // Minimum observed latency in nanoseconds (atomic)
-	maxLatency        int64 // Maximum observed latency in nanoseconds (atomic)
-	latencySamples    int64 // Number of latency samples collected (atomic)
-	jitterAccumulator int64 // Accumulated jitter for variance calculation (atomic)
-	lastOptimization  int64 // Timestamp of last optimization in nanoseconds (atomic)
-
-	config LatencyConfig
-	logger zerolog.Logger
-
-	// Control channels
-	ctx    context.Context
-	cancel context.CancelFunc
-	wg     sync.WaitGroup
-
-	// Optimization callbacks
-	optimizationCallbacks []OptimizationCallback
-	mutex                 sync.RWMutex
-
-	// Performance tracking
-	latencyHistory []LatencyMeasurement
-	historyMutex   sync.RWMutex
-}
-
-// LatencyConfig holds configuration for latency monitoring
-type LatencyConfig struct {
-	TargetLatency        time.Duration // Target latency to maintain
-	MaxLatency           time.Duration // Maximum acceptable latency
-	OptimizationInterval time.Duration // How often to run optimization
-	HistorySize          int           // Number of latency measurements to keep
-	JitterThreshold      time.Duration // Jitter threshold for optimization
-	AdaptiveThreshold    float64       // Threshold for adaptive adjustments (0.0-1.0)
-}
-
-// LatencyMeasurement represents a single latency measurement
-type LatencyMeasurement struct {
-	Timestamp time.Time
-	Latency   time.Duration
-	Jitter    time.Duration
-	Source    string // Source of the measurement (e.g., "input", "output", "processing")
-}
-
-// OptimizationCallback is called when latency optimization is triggered
-type OptimizationCallback func(metrics LatencyMetrics) error
-
-// LatencyMetrics provides comprehensive latency statistics
-type LatencyMetrics struct {
-	Current     time.Duration
-	Average     time.Duration
-	Min         time.Duration
-	Max         time.Duration
-	Jitter      time.Duration
-	SampleCount int64
-	Trend       LatencyTrend
-}
-
-// LatencyTrend indicates the direction of latency changes
-type LatencyTrend int
-
-const (
-	LatencyTrendStable LatencyTrend = iota
-	LatencyTrendIncreasing
-	LatencyTrendDecreasing
-	LatencyTrendVolatile
-)
-
-// DefaultLatencyConfig returns a sensible default configuration
-func DefaultLatencyConfig() LatencyConfig {
-	config := GetConfig()
-	return LatencyConfig{
-		TargetLatency:        config.LatencyMonitorTarget,
-		MaxLatency:           config.MaxLatencyThreshold,
-		OptimizationInterval: config.LatencyOptimizationInterval,
-		HistorySize:          config.LatencyHistorySize,
-		JitterThreshold:      config.JitterThreshold,
-		AdaptiveThreshold:    config.LatencyAdaptiveThreshold,
-	}
-}
-
-// NewLatencyMonitor creates a new latency monitoring system
-func NewLatencyMonitor(config LatencyConfig, logger zerolog.Logger) *LatencyMonitor {
-	// Validate latency configuration
-	if err := ValidateLatencyConfig(config); err != nil {
-		// Log validation error and use default configuration
-		logger.Error().Err(err).Msg("Invalid latency configuration provided, using defaults")
-		config = DefaultLatencyConfig()
-	}
-
-	ctx, cancel := context.WithCancel(context.Background())
-
-	return &LatencyMonitor{
-		config:         config,
-		logger:         logger.With().Str("component", "latency-monitor").Logger(),
-		ctx:            ctx,
-		cancel:         cancel,
-		latencyHistory: make([]LatencyMeasurement, 0, config.HistorySize),
-		minLatency:     int64(time.Hour), // Initialize to high value
-	}
-}
-
-// Start begins latency monitoring and optimization
-func (lm *LatencyMonitor) Start() {
-	lm.wg.Add(1)
-	go lm.monitoringLoop()
-}
-
-// Stop stops the latency monitor
-func (lm *LatencyMonitor) Stop() {
-	lm.cancel()
-	lm.wg.Wait()
-}
-
-// RecordLatency records a new latency measurement
-func (lm *LatencyMonitor) RecordLatency(latency time.Duration, source string) {
-	now := time.Now()
-	latencyNanos := latency.Nanoseconds()
-
-	// Update atomic counters
-	atomic.StoreInt64(&lm.currentLatency, latencyNanos)
-	atomic.AddInt64(&lm.latencySamples, 1)
-
-	// Update min/max
-	for {
-		oldMin := atomic.LoadInt64(&lm.minLatency)
-		if latencyNanos >= oldMin || atomic.CompareAndSwapInt64(&lm.minLatency, oldMin, latencyNanos) {
-			break
-		}
-	}
-
-	for {
-		oldMax := atomic.LoadInt64(&lm.maxLatency)
-		if latencyNanos <= oldMax || atomic.CompareAndSwapInt64(&lm.maxLatency, oldMax, latencyNanos) {
-			break
-		}
-	}
-
-	// Update rolling average using exponential moving average
-	oldAvg := atomic.LoadInt64(&lm.averageLatency)
-	newAvg := oldAvg + (latencyNanos-oldAvg)/10 // Alpha = 0.1
-	atomic.StoreInt64(&lm.averageLatency, newAvg)
-
-	// Calculate jitter (difference from average)
-	jitter := latencyNanos - newAvg
-	if jitter < 0 {
-		jitter = -jitter
-	}
-	atomic.AddInt64(&lm.jitterAccumulator, jitter)
-
-	// Store in history
-	lm.historyMutex.Lock()
-	measurement := LatencyMeasurement{
-		Timestamp: now,
-		Latency:   latency,
-		Jitter:    time.Duration(jitter),
-		Source:    source,
-	}
-
-	if len(lm.latencyHistory) >= lm.config.HistorySize {
-		// Remove oldest measurement
-		copy(lm.latencyHistory, lm.latencyHistory[1:])
-		lm.latencyHistory[len(lm.latencyHistory)-1] = measurement
-	} else {
-		lm.latencyHistory = append(lm.latencyHistory, measurement)
-	}
-	lm.historyMutex.Unlock()
-}
-
-// GetMetrics returns current latency metrics
-func (lm *LatencyMonitor) GetMetrics() LatencyMetrics {
-	current := atomic.LoadInt64(&lm.currentLatency)
-	average := atomic.LoadInt64(&lm.averageLatency)
-	min := atomic.LoadInt64(&lm.minLatency)
-	max := atomic.LoadInt64(&lm.maxLatency)
-	samples := atomic.LoadInt64(&lm.latencySamples)
-	jitterSum := atomic.LoadInt64(&lm.jitterAccumulator)
-
-	var jitter time.Duration
-	if samples > 0 {
-		jitter = time.Duration(jitterSum / samples)
-	}
-
-	return LatencyMetrics{
-		Current:     time.Duration(current),
-		Average:     time.Duration(average),
-		Min:         time.Duration(min),
-		Max:         time.Duration(max),
-		Jitter:      jitter,
-		SampleCount: samples,
-		Trend:       lm.calculateTrend(),
-	}
-}
-
-// AddOptimizationCallback adds a callback for latency optimization
-func (lm *LatencyMonitor) AddOptimizationCallback(callback OptimizationCallback) {
-	lm.mutex.Lock()
-	lm.optimizationCallbacks = append(lm.optimizationCallbacks, callback)
-	lm.mutex.Unlock()
-}
-
-// monitoringLoop runs the main monitoring and optimization loop
-func (lm *LatencyMonitor) monitoringLoop() {
-	defer lm.wg.Done()
-
-	ticker := time.NewTicker(lm.config.OptimizationInterval)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-lm.ctx.Done():
-			return
-		case <-ticker.C:
-			lm.runOptimization()
-		}
-	}
-}
-
-// runOptimization checks if optimization is needed and triggers callbacks with threshold validation.
-//
-// Validation Rules:
-//   - Current latency must not exceed MaxLatency (default: 200ms)
-//   - Average latency checked against adaptive threshold: TargetLatency * (1 + AdaptiveThreshold)
-//   - Jitter must not exceed JitterThreshold (default: 20ms)
-//   - All latency values must be non-negative durations
-//
-// Optimization Triggers:
-//   - Current latency > MaxLatency: Immediate optimization needed
-//   - Average latency > adaptive threshold: Gradual optimization needed
-//   - Jitter > JitterThreshold: Stability optimization needed
-//
-// Threshold Calculations:
-//   - Adaptive threshold = TargetLatency * (1.0 + AdaptiveThreshold)
-//   - Default: 50ms * (1.0 + 0.8) = 90ms adaptive threshold
-//   - Provides buffer above target before triggering optimization
-//
-// The function ensures real-time audio performance by monitoring multiple
-// latency metrics and triggering optimization callbacks when thresholds are exceeded.
-func (lm *LatencyMonitor) runOptimization() {
-	metrics := lm.GetMetrics()
-
-	// Check if optimization is needed
-	needsOptimization := false
-
-	// Check if current latency exceeds threshold
-	if metrics.Current > lm.config.MaxLatency {
-		needsOptimization = true
-		lm.logger.Warn().Dur("current_latency", metrics.Current).Dur("max_latency", lm.config.MaxLatency).Msg("latency exceeds maximum threshold")
-	}
-
-	// Check if average latency is above adaptive threshold
-	adaptiveThreshold := time.Duration(float64(lm.config.TargetLatency.Nanoseconds()) * (1.0 + lm.config.AdaptiveThreshold))
-	if metrics.Average > adaptiveThreshold {
-		needsOptimization = true
-	}
-
-	// Check if jitter is too high
-	if metrics.Jitter > lm.config.JitterThreshold {
-		needsOptimization = true
-	}
-
-	if needsOptimization {
-		atomic.StoreInt64(&lm.lastOptimization, time.Now().UnixNano())
-
-		// Run optimization callbacks
-		lm.mutex.RLock()
-		callbacks := make([]OptimizationCallback, len(lm.optimizationCallbacks))
-		copy(callbacks, lm.optimizationCallbacks)
-		lm.mutex.RUnlock()
-
-		for _, callback := range callbacks {
-			if err := callback(metrics); err != nil {
-				lm.logger.Error().Err(err).Msg("optimization callback failed")
-			}
-		}
-	}
-}
-
-// calculateTrend analyzes recent latency measurements to determine trend
-func (lm *LatencyMonitor) calculateTrend() LatencyTrend {
-	lm.historyMutex.RLock()
-	defer lm.historyMutex.RUnlock()
-
-	if len(lm.latencyHistory) < 10 {
-		return LatencyTrendStable
-	}
-
-	// Analyze last 10 measurements
-	recentMeasurements := lm.latencyHistory[len(lm.latencyHistory)-10:]
-
-	var increasing, decreasing int
-	for i := 1; i < len(recentMeasurements); i++ {
-		if recentMeasurements[i].Latency > recentMeasurements[i-1].Latency {
-			increasing++
-		} else if recentMeasurements[i].Latency < recentMeasurements[i-1].Latency {
-			decreasing++
-		}
-	}
-
-	// Determine trend based on direction changes
-	if increasing > 6 {
-		return LatencyTrendIncreasing
-	} else if decreasing > 6 {
-		return LatencyTrendDecreasing
-	} else if increasing+decreasing > 7 {
-		return LatencyTrendVolatile
-	}
-
-	return LatencyTrendStable
-}
-
-// GetLatencyHistory returns a copy of recent latency measurements
-func (lm *LatencyMonitor) GetLatencyHistory() []LatencyMeasurement {
-	lm.historyMutex.RLock()
-	defer lm.historyMutex.RUnlock()
-
-	history := make([]LatencyMeasurement, len(lm.latencyHistory))
-	copy(history, lm.latencyHistory)
-	return history
-}

internal/audio/monitor_process.go

@@ -1,406 +0,0 @@
-package audio
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/jetkvm/kvm/internal/logging"
-	"github.com/rs/zerolog"
-)
-
-// Variables for process monitoring (using configuration)
-var (
-	// System constants
-	maxCPUPercent     = GetConfig().MaxCPUPercent
-	minCPUPercent     = GetConfig().MinCPUPercent
-	defaultClockTicks = GetConfig().DefaultClockTicks
-	defaultMemoryGB   = GetConfig().DefaultMemoryGB
-
-	// Monitoring thresholds
-	maxWarmupSamples = GetConfig().MaxWarmupSamples
-	warmupCPUSamples = GetConfig().WarmupCPUSamples
-
-	// Channel buffer size
-	metricsChannelBuffer = GetConfig().MetricsChannelBuffer
-
-	// Clock tick detection ranges
-	minValidClockTicks = float64(GetConfig().MinValidClockTicks)
-	maxValidClockTicks = float64(GetConfig().MaxValidClockTicks)
-)
-
-// Variables for process monitoring
-var (
-	pageSize = GetConfig().PageSize
-)
-
-// ProcessMetrics represents CPU and memory usage metrics for a process
-type ProcessMetrics struct {
-	PID           int       `json:"pid"`
-	CPUPercent    float64   `json:"cpu_percent"`
-	MemoryRSS     int64     `json:"memory_rss_bytes"`
-	MemoryVMS     int64     `json:"memory_vms_bytes"`
-	MemoryPercent float64   `json:"memory_percent"`
-	Timestamp     time.Time `json:"timestamp"`
-	ProcessName   string    `json:"process_name"`
-}
-
-type ProcessMonitor struct {
-	logger         zerolog.Logger
-	mutex          sync.RWMutex
-	monitoredPIDs  map[int]*processState
-	running        bool
-	stopChan       chan struct{}
-	metricsChan    chan ProcessMetrics
-	updateInterval time.Duration
-	totalMemory    int64
-	memoryOnce     sync.Once
-	clockTicks     float64
-	clockTicksOnce sync.Once
-}
-
-// processState tracks the state needed for CPU calculation
-type processState struct {
-	name          string
-	lastCPUTime   int64
-	lastSysTime   int64
-	lastUserTime  int64
-	lastSample    time.Time
-	warmupSamples int
-}
-
-// NewProcessMonitor creates a new process monitor
-func NewProcessMonitor() *ProcessMonitor {
-	return &ProcessMonitor{
-		logger:         logging.GetDefaultLogger().With().Str("component", "process-monitor").Logger(),
-		monitoredPIDs:  make(map[int]*processState),
-		stopChan:       make(chan struct{}),
-		metricsChan:    make(chan ProcessMetrics, metricsChannelBuffer),
-		updateInterval: GetMetricsUpdateInterval(),
-	}
-}
-
-// Start begins monitoring processes
-func (pm *ProcessMonitor) Start() {
-	pm.mutex.Lock()
-	defer pm.mutex.Unlock()
-
-	if pm.running {
-		return
-	}
-
-	pm.running = true
-	go pm.monitorLoop()
-	pm.logger.Debug().Msg("process monitor started")
-}
-
-// Stop stops monitoring processes
-func (pm *ProcessMonitor) Stop() {
-	pm.mutex.Lock()
-	defer pm.mutex.Unlock()
-
-	if !pm.running {
-		return
-	}
-
-	pm.running = false
-	close(pm.stopChan)
-	pm.logger.Debug().Msg("process monitor stopped")
-}
-
-// AddProcess adds a process to monitor
-func (pm *ProcessMonitor) AddProcess(pid int, name string) {
-	pm.mutex.Lock()
-	defer pm.mutex.Unlock()
-
-	pm.monitoredPIDs[pid] = &processState{
-		name:       name,
-		lastSample: time.Now(),
-	}
-	pm.logger.Info().Int("pid", pid).Str("name", name).Msg("Added process to monitor")
-}
-
-// RemoveProcess removes a process from monitoring
-func (pm *ProcessMonitor) RemoveProcess(pid int) {
-	pm.mutex.Lock()
-	defer pm.mutex.Unlock()
-
-	delete(pm.monitoredPIDs, pid)
-	pm.logger.Info().Int("pid", pid).Msg("Removed process from monitor")
-}
-
-// GetMetricsChan returns the channel for receiving metrics
-func (pm *ProcessMonitor) GetMetricsChan() <-chan ProcessMetrics {
-	return pm.metricsChan
-}
-
-// GetCurrentMetrics returns current metrics for all monitored processes
-func (pm *ProcessMonitor) GetCurrentMetrics() []ProcessMetrics {
-	pm.mutex.RLock()
-	defer pm.mutex.RUnlock()
-
-	var metrics []ProcessMetrics
-	for pid, state := range pm.monitoredPIDs {
-		if metric, err := pm.collectMetrics(pid, state); err == nil {
-			metrics = append(metrics, metric)
-		}
-	}
-	return metrics
-}
-
-// monitorLoop is the main monitoring loop
-func (pm *ProcessMonitor) monitorLoop() {
-	ticker := time.NewTicker(pm.updateInterval)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-pm.stopChan:
-			return
-		case <-ticker.C:
-			pm.collectAllMetrics()
-		}
-	}
-}
-
-func (pm *ProcessMonitor) collectAllMetrics() {
-	pm.mutex.RLock()
-	pidsToCheck := make([]int, 0, len(pm.monitoredPIDs))
-	states := make([]*processState, 0, len(pm.monitoredPIDs))
-	for pid, state := range pm.monitoredPIDs {
-		pidsToCheck = append(pidsToCheck, pid)
-		states = append(states, state)
-	}
-	pm.mutex.RUnlock()
-
-	deadPIDs := make([]int, 0)
-	for i, pid := range pidsToCheck {
-		if metric, err := pm.collectMetrics(pid, states[i]); err == nil {
-			select {
-			case pm.metricsChan <- metric:
-			default:
-			}
-		} else {
-			deadPIDs = append(deadPIDs, pid)
-		}
-	}
-
-	for _, pid := range deadPIDs {
-		pm.RemoveProcess(pid)
-	}
-}
-
-func (pm *ProcessMonitor) collectMetrics(pid int, state *processState) (ProcessMetrics, error) {
-	now := time.Now()
-	metric := ProcessMetrics{
-		PID:         pid,
-		Timestamp:   now,
-		ProcessName: state.name,
-	}
-
-	statPath := fmt.Sprintf("/proc/%d/stat", pid)
-	statData, err := os.ReadFile(statPath)
-	if err != nil {
-		return metric, fmt.Errorf("failed to read process statistics from /proc/%d/stat: %w", pid, err)
-	}
-
-	fields := strings.Fields(string(statData))
-	if len(fields) < 24 {
-		return metric, fmt.Errorf("invalid process stat format: expected at least 24 fields, got %d from /proc/%d/stat", len(fields), pid)
-	}
-
-	utime, _ := strconv.ParseInt(fields[13], 10, 64)
-	stime, _ := strconv.ParseInt(fields[14], 10, 64)
-	totalCPUTime := utime + stime
-
-	vsize, _ := strconv.ParseInt(fields[22], 10, 64)
-	rss, _ := strconv.ParseInt(fields[23], 10, 64)
-
-	metric.MemoryRSS = rss * int64(pageSize)
-	metric.MemoryVMS = vsize
-
-	// Calculate CPU percentage
-	metric.CPUPercent = pm.calculateCPUPercent(totalCPUTime, state, now)
-
-	// Increment warmup counter
-	if state.warmupSamples < maxWarmupSamples {
-		state.warmupSamples++
-	}
-
-	// Calculate memory percentage (RSS / total system memory)
-	if totalMem := pm.getTotalMemory(); totalMem > 0 {
-		metric.MemoryPercent = float64(metric.MemoryRSS) / float64(totalMem) * GetConfig().PercentageMultiplier
-	}
-
-	// Update state for next calculation
-	state.lastCPUTime = totalCPUTime
-	state.lastUserTime = utime
-	state.lastSysTime = stime
-	state.lastSample = now
-
-	return metric, nil
-}
-
-// calculateCPUPercent calculates CPU percentage for a process with validation and bounds checking.
-//
-// Validation Rules:
-//   - Returns 0.0 for first sample (no baseline for comparison)
-//   - Requires positive time delta between samples
-//   - Applies CPU percentage bounds: [MinCPUPercent, MaxCPUPercent]
-//   - Uses system clock ticks for accurate CPU time conversion
-//   - Validates clock ticks within range [MinValidClockTicks, MaxValidClockTicks]
-//
-// Bounds Applied:
-//   - CPU percentage clamped to [0.01%, 100.0%] (default values)
-//   - Clock ticks validated within [50, 1000] range (default values)
-//   - Time delta must be > 0 to prevent division by zero
-//
-// Warmup Behavior:
-//   - During warmup period (< WarmupCPUSamples), returns MinCPUPercent for idle processes
-//   - This indicates process is alive but not consuming significant CPU
-//
-// The function ensures accurate CPU percentage calculation while preventing
-// invalid measurements that could affect system monitoring and adaptive algorithms.
-func (pm *ProcessMonitor) calculateCPUPercent(totalCPUTime int64, state *processState, now time.Time) float64 {
-	if state.lastSample.IsZero() {
-		// First sample - initialize baseline
-		state.warmupSamples = 0
-		return 0.0
-	}
-
-	timeDelta := now.Sub(state.lastSample).Seconds()
-	cpuDelta := float64(totalCPUTime - state.lastCPUTime)
-
-	if timeDelta <= 0 {
-		return 0.0
-	}
-
-	if cpuDelta > 0 {
-		// Convert from clock ticks to seconds using actual system clock ticks
-		clockTicks := pm.getClockTicks()
-		cpuSeconds := cpuDelta / clockTicks
-		cpuPercent := (cpuSeconds / timeDelta) * GetConfig().PercentageMultiplier
-
-		// Apply bounds
-		if cpuPercent > maxCPUPercent {
-			cpuPercent = maxCPUPercent
-		}
-		if cpuPercent < minCPUPercent {
-			cpuPercent = minCPUPercent
-		}
-
-		return cpuPercent
-	}
-
-	// No CPU delta - process was idle
-	if state.warmupSamples < warmupCPUSamples {
-		// During warmup, provide a small non-zero value to indicate process is alive
-		return minCPUPercent
-	}
-
-	return 0.0
-}
-
-func (pm *ProcessMonitor) getClockTicks() float64 {
-	pm.clockTicksOnce.Do(func() {
-		// Try to detect actual clock ticks from kernel boot parameters or /proc/stat
-		if data, err := os.ReadFile("/proc/cmdline"); err == nil {
-			// Look for HZ parameter in kernel command line
-			cmdline := string(data)
-			if strings.Contains(cmdline, "HZ=") {
-				fields := strings.Fields(cmdline)
-				for _, field := range fields {
-					if strings.HasPrefix(field, "HZ=") {
-						if hz, err := strconv.ParseFloat(field[3:], 64); err == nil && hz > 0 {
-							pm.clockTicks = hz
-							return
-						}
-					}
-				}
-			}
-		}
-
-		// Try reading from /proc/timer_list for more accurate detection
-		if data, err := os.ReadFile("/proc/timer_list"); err == nil {
-			timer := string(data)
-			// Look for tick device frequency
-			lines := strings.Split(timer, "\n")
-			for _, line := range lines {
-				if strings.Contains(line, "tick_period:") {
-					fields := strings.Fields(line)
-					if len(fields) >= 2 {
-						if period, err := strconv.ParseInt(fields[1], 10, 64); err == nil && period > 0 {
-							// Convert nanoseconds to Hz
-							hz := GetConfig().CGONanosecondsPerSecond / float64(period)
-							if hz >= minValidClockTicks && hz <= maxValidClockTicks {
-								pm.clockTicks = hz
-								return
-							}
-						}
-					}
-				}
-			}
-		}
-
-		// Fallback: Most embedded ARM systems (like jetKVM) use 250 Hz or 1000 Hz
-		// rather than the traditional 100 Hz
-		pm.clockTicks = defaultClockTicks
-		pm.logger.Warn().Float64("clock_ticks", pm.clockTicks).Msg("Using fallback clock ticks value")
-
-		// Log successful detection for non-fallback values
-		if pm.clockTicks != defaultClockTicks {
-			pm.logger.Info().Float64("clock_ticks", pm.clockTicks).Msg("Detected system clock ticks")
-		}
-	})
-	return pm.clockTicks
-}
-
-func (pm *ProcessMonitor) getTotalMemory() int64 {
-	pm.memoryOnce.Do(func() {
-		file, err := os.Open("/proc/meminfo")
-		if err != nil {
-			pm.totalMemory = int64(defaultMemoryGB) * int64(GetConfig().ProcessMonitorKBToBytes) * int64(GetConfig().ProcessMonitorKBToBytes) * int64(GetConfig().ProcessMonitorKBToBytes)
-			return
-		}
-		defer file.Close()
-
-		scanner := bufio.NewScanner(file)
-		for scanner.Scan() {
-			line := scanner.Text()
-			if strings.HasPrefix(line, "MemTotal:") {
-				fields := strings.Fields(line)
-				if len(fields) >= 2 {
-					if kb, err := strconv.ParseInt(fields[1], 10, 64); err == nil {
-						pm.totalMemory = kb * int64(GetConfig().ProcessMonitorKBToBytes)
-						return
-					}
-				}
-				break
-			}
-		}
-		pm.totalMemory = int64(defaultMemoryGB) * int64(GetConfig().ProcessMonitorKBToBytes) * int64(GetConfig().ProcessMonitorKBToBytes) * int64(GetConfig().ProcessMonitorKBToBytes) // Fallback
-	})
-	return pm.totalMemory
-}
-
-// GetTotalMemory returns total system memory in bytes (public method)
-func (pm *ProcessMonitor) GetTotalMemory() int64 {
-	return pm.getTotalMemory()
-}
-
-// Global process monitor instance
-var globalProcessMonitor *ProcessMonitor
-var processMonitorOnce sync.Once
-
-// GetProcessMonitor returns the global process monitor instance
-func GetProcessMonitor() *ProcessMonitor {
-	processMonitorOnce.Do(func() {
-		globalProcessMonitor = NewProcessMonitor()
-		globalProcessMonitor.Start()
-	})
-	return globalProcessMonitor
-}

internal/audio/output_server_main.go

@@ -70,7 +70,7 @@ func RunAudioOutputServer() error {
 	StopNonBlockingAudioStreaming()
 
 	// Give some time for cleanup
-	time.Sleep(GetConfig().DefaultSleepDuration)
+	time.Sleep(Config.DefaultSleepDuration)
 
 	return nil
 }

internal/audio/output_streaming.go

@@ -48,9 +48,6 @@ func getOutputStreamingLogger() *zerolog.Logger {
 
 // StartAudioOutputStreaming starts audio output streaming (capturing system audio)
 func StartAudioOutputStreaming(send func([]byte)) error {
-	// Initialize audio monitoring (latency tracking and cache cleanup)
-	InitializeAudioMonitoring()
-
 	if !atomic.CompareAndSwapInt32(&outputStreamingRunning, 0, 1) {
 		return ErrAudioAlreadyRunning
 	}
@@ -84,9 +81,9 @@ func StartAudioOutputStreaming(send func([]byte)) error {
 		buffer := make([]byte, GetMaxAudioFrameSize())
 
 		consecutiveErrors := 0
-		maxConsecutiveErrors := GetConfig().MaxConsecutiveErrors
+		maxConsecutiveErrors := Config.MaxConsecutiveErrors
-		errorBackoffDelay := GetConfig().RetryDelay
+		errorBackoffDelay := Config.RetryDelay
-		maxErrorBackoff := GetConfig().MaxRetryDelay
+		maxErrorBackoff := Config.MaxRetryDelay
 
 		for {
 			select {
@@ -123,18 +120,18 @@ func StartAudioOutputStreaming(send func([]byte)) error {
 								Err(initErr).
 								Msg("Failed to reinitialize audio system")
 							// Exponential backoff for reinitialization failures
-							errorBackoffDelay = time.Duration(float64(errorBackoffDelay) * GetConfig().BackoffMultiplier)
+							errorBackoffDelay = time.Duration(float64(errorBackoffDelay) * Config.BackoffMultiplier)
 							if errorBackoffDelay > maxErrorBackoff {
 								errorBackoffDelay = maxErrorBackoff
 							}
 						} else {
 							getOutputStreamingLogger().Info().Msg("Audio system reinitialized successfully")
 							consecutiveErrors = 0
-							errorBackoffDelay = GetConfig().RetryDelay // Reset backoff
+							errorBackoffDelay = Config.RetryDelay // Reset backoff
 						}
 					} else {
 						// Brief delay for transient errors
-						time.Sleep(GetConfig().ShortSleepDuration)
+						time.Sleep(Config.ShortSleepDuration)
 					}
 					continue
 				}
@@ -142,7 +139,7 @@ func StartAudioOutputStreaming(send func([]byte)) error {
 				// Success - reset error counters
 				if consecutiveErrors > 0 {
 					consecutiveErrors = 0
-					errorBackoffDelay = GetConfig().RetryDelay
+					errorBackoffDelay = Config.RetryDelay
 				}
 
 				if n > 0 {
@@ -164,7 +161,7 @@ func StartAudioOutputStreaming(send func([]byte)) error {
 					RecordFrameReceived(n)
 				}
 				// Small delay to prevent busy waiting
-				time.Sleep(GetConfig().ShortSleepDuration)
+				time.Sleep(Config.ShortSleepDuration)
 			}
 		}
 	}()
@@ -185,6 +182,6 @@ func StopAudioOutputStreaming() {
 
 	// Wait for streaming to stop
 	for atomic.LoadInt32(&outputStreamingRunning) == 1 {
-		time.Sleep(GetConfig().ShortSleepDuration)
+		time.Sleep(Config.ShortSleepDuration)
 	}
 }

internal/audio/output_supervisor.go

@@ -19,19 +19,19 @@ const (
 
 // Restart configuration is now retrieved from centralized config
 func getMaxRestartAttempts() int {
-	return GetConfig().MaxRestartAttempts
+	return Config.MaxRestartAttempts
 }
 
 func getRestartWindow() time.Duration {
-	return GetConfig().RestartWindow
+	return Config.RestartWindow
 }
 
 func getRestartDelay() time.Duration {
-	return GetConfig().RestartDelay
+	return Config.RestartDelay
 }
 
 func getMaxRestartDelay() time.Duration {
-	return GetConfig().MaxRestartDelay
+	return Config.MaxRestartDelay
 }
 
 // AudioOutputSupervisor manages the audio output server subprocess lifecycle
@@ -125,6 +125,12 @@ func (s *AudioOutputSupervisor) Start() error {
 	// Start the supervision loop
 	go s.supervisionLoop()
 
+	// Establish IPC connection to subprocess after a brief delay
+	go func() {
+		time.Sleep(500 * time.Millisecond) // Wait for subprocess to start
+		s.connectClient()
+	}()
+
 	s.logger.Info().Str("component", AudioOutputSupervisorComponent).Msg("component started successfully")
 	return nil
 }
@@ -145,11 +151,20 @@ func (s *AudioOutputSupervisor) Stop() {
 	select {
 	case <-s.processDone:
 		s.logger.Info().Str("component", AudioOutputSupervisorComponent).Msg("component stopped gracefully")
-	case <-time.After(GetConfig().OutputSupervisorTimeout):
+	case <-time.After(Config.OutputSupervisorTimeout):
 		s.logger.Warn().Str("component", AudioOutputSupervisorComponent).Msg("component did not stop gracefully, forcing termination")
 		s.forceKillProcess("audio output server")
 	}
 
+	// Ensure socket file cleanup even if subprocess didn't clean up properly
+	// This prevents "address already in use" errors on restart
+	outputSocketPath := getOutputSocketPath()
+	if err := os.Remove(outputSocketPath); err != nil && !os.IsNotExist(err) {
+		s.logger.Warn().Err(err).Str("socket_path", outputSocketPath).Msg("failed to remove output socket file during supervisor stop")
+	} else if err == nil {
+		s.logger.Debug().Str("socket_path", outputSocketPath).Msg("cleaned up output socket file")
+	}
+
 	s.logger.Info().Str("component", AudioOutputSupervisorComponent).Msg("component stopped")
 }
 
@@ -158,7 +173,7 @@ func (s *AudioOutputSupervisor) supervisionLoop() {
 	// Configure supervision parameters
 	config := SupervisionConfig{
 		ProcessType:        "audio output server",
-		Timeout:            GetConfig().OutputSupervisorTimeout,
+		Timeout:            Config.OutputSupervisorTimeout,
 		EnableRestart:      true,
 		MaxRestartAttempts: getMaxRestartAttempts(),
 		RestartWindow:      getRestartWindow(),
@@ -213,7 +228,6 @@ func (s *AudioOutputSupervisor) startProcess() error {
 	s.logger.Info().Int("pid", s.processPID).Strs("args", args).Strs("opus_env", s.opusEnv).Msg("audio server process started")
 
 	// Add process to monitoring
-	s.processMonitor.AddProcess(s.processPID, "audio-output-server")
 
 	if s.onProcessStart != nil {
 		s.onProcessStart(s.processPID)
@@ -275,3 +289,43 @@ func (s *AudioOutputSupervisor) calculateRestartDelay() time.Duration {
 
 	return delay
 }
+
+// client holds the IPC client for communicating with the subprocess
+var outputClient *AudioOutputClient
+
+// IsConnected returns whether the supervisor has an active connection to the subprocess
+func (s *AudioOutputSupervisor) IsConnected() bool {
+	return outputClient != nil && outputClient.IsConnected()
+}
+
+// GetClient returns the IPC client for the subprocess
+func (s *AudioOutputSupervisor) GetClient() *AudioOutputClient {
+	return outputClient
+}
+
+// connectClient establishes connection to the audio output subprocess
+func (s *AudioOutputSupervisor) connectClient() {
+	if outputClient == nil {
+		outputClient = NewAudioOutputClient()
+	}
+
+	// Try to connect to the subprocess
+	if err := outputClient.Connect(); err != nil {
+		s.logger.Warn().Err(err).Msg("Failed to connect to audio output subprocess")
+	} else {
+		s.logger.Info().Msg("Connected to audio output subprocess")
+	}
+}
+
+// SendOpusConfig sends Opus configuration to the audio output subprocess
+func (s *AudioOutputSupervisor) SendOpusConfig(config OutputIPCOpusConfig) error {
+	if outputClient == nil {
+		return fmt.Errorf("client not initialized")
+	}
+
+	if !outputClient.IsConnected() {
+		return fmt.Errorf("client not connected")
+	}
+
+	return outputClient.SendOpusConfig(config)
+}

internal/audio/quality_presets.go

@@ -39,7 +39,7 @@ var (
 
 // MaxAudioFrameSize is now retrieved from centralized config
 func GetMaxAudioFrameSize() int {
-	return GetConfig().MaxAudioFrameSize
+	return Config.MaxAudioFrameSize
 }
 
 // AudioQuality represents different audio quality presets
@@ -74,17 +74,17 @@ type AudioMetrics struct {
 var (
 	currentConfig = AudioConfig{
 		Quality:    AudioQualityMedium,
-		Bitrate:    GetConfig().AudioQualityMediumOutputBitrate,
+		Bitrate:    Config.AudioQualityMediumOutputBitrate,
-		SampleRate: GetConfig().SampleRate,
+		SampleRate: Config.SampleRate,
-		Channels:   GetConfig().Channels,
+		Channels:   Config.Channels,
-		FrameSize:  GetConfig().AudioQualityMediumFrameSize,
+		FrameSize:  Config.AudioQualityMediumFrameSize,
 	}
 	currentMicrophoneConfig = AudioConfig{
 		Quality:    AudioQualityMedium,
-		Bitrate:    GetConfig().AudioQualityMediumInputBitrate,
+		Bitrate:    Config.AudioQualityMediumInputBitrate,
-		SampleRate: GetConfig().SampleRate,
+		SampleRate: Config.SampleRate,
 		Channels:   1,
-		FrameSize:  GetConfig().AudioQualityMediumFrameSize,
+		FrameSize:  Config.AudioQualityMediumFrameSize,
 	}
 	metrics AudioMetrics
 )
@@ -96,24 +96,24 @@ var qualityPresets = map[AudioQuality]struct {
 	frameSize                   time.Duration
 }{
 	AudioQualityLow: {
-		outputBitrate: GetConfig().AudioQualityLowOutputBitrate, inputBitrate: GetConfig().AudioQualityLowInputBitrate,
+		outputBitrate: Config.AudioQualityLowOutputBitrate, inputBitrate: Config.AudioQualityLowInputBitrate,
-		sampleRate: GetConfig().AudioQualityLowSampleRate, channels: GetConfig().AudioQualityLowChannels,
+		sampleRate: Config.AudioQualityLowSampleRate, channels: Config.AudioQualityLowChannels,
-		frameSize: GetConfig().AudioQualityLowFrameSize,
+		frameSize: Config.AudioQualityLowFrameSize,
 	},
 	AudioQualityMedium: {
-		outputBitrate: GetConfig().AudioQualityMediumOutputBitrate, inputBitrate: GetConfig().AudioQualityMediumInputBitrate,
+		outputBitrate: Config.AudioQualityMediumOutputBitrate, inputBitrate: Config.AudioQualityMediumInputBitrate,
-		sampleRate: GetConfig().AudioQualityMediumSampleRate, channels: GetConfig().AudioQualityMediumChannels,
+		sampleRate: Config.AudioQualityMediumSampleRate, channels: Config.AudioQualityMediumChannels,
-		frameSize: GetConfig().AudioQualityMediumFrameSize,
+		frameSize: Config.AudioQualityMediumFrameSize,
 	},
 	AudioQualityHigh: {
-		outputBitrate: GetConfig().AudioQualityHighOutputBitrate, inputBitrate: GetConfig().AudioQualityHighInputBitrate,
+		outputBitrate: Config.AudioQualityHighOutputBitrate, inputBitrate: Config.AudioQualityHighInputBitrate,
-		sampleRate: GetConfig().SampleRate, channels: GetConfig().AudioQualityHighChannels,
+		sampleRate: Config.SampleRate, channels: Config.AudioQualityHighChannels,
-		frameSize: GetConfig().AudioQualityHighFrameSize,
+		frameSize: Config.AudioQualityHighFrameSize,
 	},
 	AudioQualityUltra: {
-		outputBitrate: GetConfig().AudioQualityUltraOutputBitrate, inputBitrate: GetConfig().AudioQualityUltraInputBitrate,
+		outputBitrate: Config.AudioQualityUltraOutputBitrate, inputBitrate: Config.AudioQualityUltraInputBitrate,
-		sampleRate: GetConfig().SampleRate, channels: GetConfig().AudioQualityUltraChannels,
+		sampleRate: Config.SampleRate, channels: Config.AudioQualityUltraChannels,
-		frameSize: GetConfig().AudioQualityUltraFrameSize,
+		frameSize: Config.AudioQualityUltraFrameSize,
 	},
 }
 
@@ -142,7 +142,7 @@ func GetMicrophoneQualityPresets() map[AudioQuality]AudioConfig {
 			Bitrate: preset.inputBitrate,
 			SampleRate: func() int {
 				if quality == AudioQualityLow {
-					return GetConfig().AudioQualityMicLowSampleRate
+					return Config.AudioQualityMicLowSampleRate
 				}
 				return preset.sampleRate
 			}(),
@@ -172,58 +172,84 @@ func SetAudioQuality(quality AudioQuality) {
 		var complexity, vbr, signalType, bandwidth, dtx int
 		switch quality {
 		case AudioQualityLow:
-			complexity = GetConfig().AudioQualityLowOpusComplexity
+			complexity = Config.AudioQualityLowOpusComplexity
-			vbr = GetConfig().AudioQualityLowOpusVBR
+			vbr = Config.AudioQualityLowOpusVBR
-			signalType = GetConfig().AudioQualityLowOpusSignalType
+			signalType = Config.AudioQualityLowOpusSignalType
-			bandwidth = GetConfig().AudioQualityLowOpusBandwidth
+			bandwidth = Config.AudioQualityLowOpusBandwidth
-			dtx = GetConfig().AudioQualityLowOpusDTX
+			dtx = Config.AudioQualityLowOpusDTX
 		case AudioQualityMedium:
-			complexity = GetConfig().AudioQualityMediumOpusComplexity
+			complexity = Config.AudioQualityMediumOpusComplexity
-			vbr = GetConfig().AudioQualityMediumOpusVBR
+			vbr = Config.AudioQualityMediumOpusVBR
-			signalType = GetConfig().AudioQualityMediumOpusSignalType
+			signalType = Config.AudioQualityMediumOpusSignalType
-			bandwidth = GetConfig().AudioQualityMediumOpusBandwidth
+			bandwidth = Config.AudioQualityMediumOpusBandwidth
-			dtx = GetConfig().AudioQualityMediumOpusDTX
+			dtx = Config.AudioQualityMediumOpusDTX
 		case AudioQualityHigh:
-			complexity = GetConfig().AudioQualityHighOpusComplexity
+			complexity = Config.AudioQualityHighOpusComplexity
-			vbr = GetConfig().AudioQualityHighOpusVBR
+			vbr = Config.AudioQualityHighOpusVBR
-			signalType = GetConfig().AudioQualityHighOpusSignalType
+			signalType = Config.AudioQualityHighOpusSignalType
-			bandwidth = GetConfig().AudioQualityHighOpusBandwidth
+			bandwidth = Config.AudioQualityHighOpusBandwidth
-			dtx = GetConfig().AudioQualityHighOpusDTX
+			dtx = Config.AudioQualityHighOpusDTX
 		case AudioQualityUltra:
-			complexity = GetConfig().AudioQualityUltraOpusComplexity
+			complexity = Config.AudioQualityUltraOpusComplexity
-			vbr = GetConfig().AudioQualityUltraOpusVBR
+			vbr = Config.AudioQualityUltraOpusVBR
-			signalType = GetConfig().AudioQualityUltraOpusSignalType
+			signalType = Config.AudioQualityUltraOpusSignalType
-			bandwidth = GetConfig().AudioQualityUltraOpusBandwidth
+			bandwidth = Config.AudioQualityUltraOpusBandwidth
-			dtx = GetConfig().AudioQualityUltraOpusDTX
+			dtx = Config.AudioQualityUltraOpusDTX
 		default:
 			// Use medium quality as fallback
-			complexity = GetConfig().AudioQualityMediumOpusComplexity
+			complexity = Config.AudioQualityMediumOpusComplexity
-			vbr = GetConfig().AudioQualityMediumOpusVBR
+			vbr = Config.AudioQualityMediumOpusVBR
-			signalType = GetConfig().AudioQualityMediumOpusSignalType
+			signalType = Config.AudioQualityMediumOpusSignalType
-			bandwidth = GetConfig().AudioQualityMediumOpusBandwidth
+			bandwidth = Config.AudioQualityMediumOpusBandwidth
-			dtx = GetConfig().AudioQualityMediumOpusDTX
+			dtx = Config.AudioQualityMediumOpusDTX
 		}
 
-		// Restart audio output subprocess with new OPUS configuration
+		// Update audio output subprocess configuration dynamically without restart
-		if supervisor := GetAudioOutputSupervisor(); supervisor != nil {
 		logger := logging.GetDefaultLogger().With().Str("component", "audio").Logger()
-			logger.Info().Int("quality", int(quality)).Msg("restarting audio output subprocess with new quality settings")
+		logger.Info().Int("quality", int(quality)).Msg("updating audio output quality settings dynamically")
 
-			// Set new OPUS configuration
+		// Set new OPUS configuration for future restarts
+		if supervisor := GetAudioOutputSupervisor(); supervisor != nil {
 			supervisor.SetOpusConfig(config.Bitrate*1000, complexity, vbr, signalType, bandwidth, dtx)
 
-			// Stop current subprocess
+			// Send dynamic configuration update to running subprocess via IPC
-			supervisor.Stop()
+			if supervisor.IsConnected() {
+				// Convert AudioConfig to OutputIPCOpusConfig with complete Opus parameters
+				opusConfig := OutputIPCOpusConfig{
+					SampleRate: config.SampleRate,
+					Channels:   config.Channels,
+					FrameSize:  int(config.FrameSize.Milliseconds() * int64(config.SampleRate) / 1000), // Convert ms to samples
+					Bitrate:    config.Bitrate * 1000,                                                  // Convert kbps to bps
+					Complexity: complexity,
+					VBR:        vbr,
+					SignalType: signalType,
+					Bandwidth:  bandwidth,
+					DTX:        dtx,
+				}
 
-			// Start subprocess with new configuration
+				logger.Info().Interface("opusConfig", opusConfig).Msg("sending Opus configuration to audio output subprocess")
+				if err := supervisor.SendOpusConfig(opusConfig); err != nil {
+					logger.Warn().Err(err).Msg("failed to send dynamic Opus config update via IPC, falling back to subprocess restart")
+					// Fallback to subprocess restart if IPC update fails
+					supervisor.Stop()
 					if err := supervisor.Start(); err != nil {
-				logger.Error().Err(err).Msg("failed to restart audio output subprocess")
+						logger.Error().Err(err).Msg("failed to restart audio output subprocess after IPC update failure")
 					}
 				} else {
-			// Fallback to dynamic update if supervisor is not available
+					logger.Info().Msg("audio output quality updated dynamically via IPC")
-			vbrConstraint := GetConfig().CGOOpusVBRConstraint
+
-			if err := updateOpusEncoderParams(config.Bitrate*1000, complexity, vbr, vbrConstraint, signalType, bandwidth, dtx); err != nil {
+					// Reset audio output stats after config update
-				logging.GetDefaultLogger().Error().Err(err).Msg("Failed to update OPUS encoder parameters")
+					go func() {
+						time.Sleep(Config.QualityChangeSettleDelay) // Wait for quality change to settle
+						// Reset audio input server stats to clear persistent warnings
+						ResetGlobalAudioInputServerStats()
+						// Attempt recovery if there are still issues
+						time.Sleep(1 * time.Second)
+						RecoverGlobalAudioInputServer()
+					}()
+				}
+			} else {
+				logger.Info().Bool("supervisor_running", supervisor.IsRunning()).Msg("audio output subprocess not connected, configuration will apply on next start")
 			}
 		}
 	}
@@ -234,6 +260,16 @@ func GetAudioConfig() AudioConfig {
 	return currentConfig
 }
 
+// Simplified OPUS parameter lookup table
+var opusParams = map[AudioQuality]struct {
+	complexity, vbr, signalType, bandwidth, dtx int
+}{
+	AudioQualityLow:    {Config.AudioQualityLowOpusComplexity, Config.AudioQualityLowOpusVBR, Config.AudioQualityLowOpusSignalType, Config.AudioQualityLowOpusBandwidth, Config.AudioQualityLowOpusDTX},
+	AudioQualityMedium: {Config.AudioQualityMediumOpusComplexity, Config.AudioQualityMediumOpusVBR, Config.AudioQualityMediumOpusSignalType, Config.AudioQualityMediumOpusBandwidth, Config.AudioQualityMediumOpusDTX},
+	AudioQualityHigh:   {Config.AudioQualityHighOpusComplexity, Config.AudioQualityHighOpusVBR, Config.AudioQualityHighOpusSignalType, Config.AudioQualityHighOpusBandwidth, Config.AudioQualityHighOpusDTX},
+	AudioQualityUltra:  {Config.AudioQualityUltraOpusComplexity, Config.AudioQualityUltraOpusVBR, Config.AudioQualityUltraOpusSignalType, Config.AudioQualityUltraOpusBandwidth, Config.AudioQualityUltraOpusDTX},
+}
+
 // SetMicrophoneQuality updates the current microphone quality configuration
 func SetMicrophoneQuality(quality AudioQuality) {
 	// Validate audio quality parameter
@@ -248,51 +284,32 @@ func SetMicrophoneQuality(quality AudioQuality) {
 	if config, exists := presets[quality]; exists {
 		currentMicrophoneConfig = config
 
-		// Get OPUS parameters for the selected quality
+		// Get OPUS parameters using lookup table
-		var complexity, vbr, signalType, bandwidth, dtx int
+		params, exists := opusParams[quality]
-		switch quality {
+		if !exists {
-		case AudioQualityLow:
+			// Fallback to medium quality
-			complexity = GetConfig().AudioQualityLowOpusComplexity
+			params = opusParams[AudioQualityMedium]
-			vbr = GetConfig().AudioQualityLowOpusVBR
-			signalType = GetConfig().AudioQualityLowOpusSignalType
-			bandwidth = GetConfig().AudioQualityLowOpusBandwidth
-			dtx = GetConfig().AudioQualityLowOpusDTX
-		case AudioQualityMedium:
-			complexity = GetConfig().AudioQualityMediumOpusComplexity
-			vbr = GetConfig().AudioQualityMediumOpusVBR
-			signalType = GetConfig().AudioQualityMediumOpusSignalType
-			bandwidth = GetConfig().AudioQualityMediumOpusBandwidth
-			dtx = GetConfig().AudioQualityMediumOpusDTX
-		case AudioQualityHigh:
-			complexity = GetConfig().AudioQualityHighOpusComplexity
-			vbr = GetConfig().AudioQualityHighOpusVBR
-			signalType = GetConfig().AudioQualityHighOpusSignalType
-			bandwidth = GetConfig().AudioQualityHighOpusBandwidth
-			dtx = GetConfig().AudioQualityHighOpusDTX
-		case AudioQualityUltra:
-			complexity = GetConfig().AudioQualityUltraOpusComplexity
-			vbr = GetConfig().AudioQualityUltraOpusVBR
-			signalType = GetConfig().AudioQualityUltraOpusSignalType
-			bandwidth = GetConfig().AudioQualityUltraOpusBandwidth
-			dtx = GetConfig().AudioQualityUltraOpusDTX
-		default:
-			// Use medium quality as fallback
-			complexity = GetConfig().AudioQualityMediumOpusComplexity
-			vbr = GetConfig().AudioQualityMediumOpusVBR
-			signalType = GetConfig().AudioQualityMediumOpusSignalType
-			bandwidth = GetConfig().AudioQualityMediumOpusBandwidth
-			dtx = GetConfig().AudioQualityMediumOpusDTX
 		}
 
 		// Update audio input subprocess configuration dynamically without restart
-		if supervisor := GetAudioInputSupervisor(); supervisor != nil {
 		logger := logging.GetDefaultLogger().With().Str("component", "audio").Logger()
-			logger.Info().Int("quality", int(quality)).Msg("updating audio input subprocess quality settings dynamically")
 
 		// Set new OPUS configuration for future restarts
-			supervisor.SetOpusConfig(config.Bitrate*1000, complexity, vbr, signalType, bandwidth, dtx)
+		if supervisor := GetAudioInputSupervisor(); supervisor != nil {
+			supervisor.SetOpusConfig(config.Bitrate*1000, params.complexity, params.vbr, params.signalType, params.bandwidth, params.dtx)
 
-			// Send dynamic configuration update to running subprocess
+			// Check if microphone is active but IPC control is broken
+			inputManager := getAudioInputManager()
+			if inputManager.IsRunning() && !supervisor.IsConnected() {
+				// Reconnect the IPC control channel
+				supervisor.Stop()
+				time.Sleep(50 * time.Millisecond)
+				if err := supervisor.Start(); err != nil {
+					logger.Debug().Err(err).Msg("failed to reconnect IPC control channel")
+				}
+			}
+
+			// Send dynamic configuration update to running subprocess via IPC
 			if supervisor.IsConnected() {
 				// Convert AudioConfig to InputIPCOpusConfig with complete Opus parameters
 				opusConfig := InputIPCOpusConfig{
@@ -300,23 +317,32 @@ func SetMicrophoneQuality(quality AudioQuality) {
 					Channels:   config.Channels,
 					FrameSize:  int(config.FrameSize.Milliseconds() * int64(config.SampleRate) / 1000), // Convert ms to samples
 					Bitrate:    config.Bitrate * 1000,                                                  // Convert kbps to bps
-					Complexity: complexity,
+					Complexity: params.complexity,
-					VBR:        vbr,
+					VBR:        params.vbr,
-					SignalType: signalType,
+					SignalType: params.signalType,
-					Bandwidth:  bandwidth,
+					Bandwidth:  params.bandwidth,
-					DTX:        dtx,
+					DTX:        params.dtx,
 				}
 
-				logger.Info().Interface("opusConfig", opusConfig).Msg("sending Opus configuration to audio input subprocess")
 				if err := supervisor.SendOpusConfig(opusConfig); err != nil {
-					logger.Warn().Err(err).Msg("failed to send dynamic Opus config update, subprocess may need restart")
+					logger.Debug().Err(err).Msg("failed to send dynamic Opus config update via IPC")
-					// Fallback to restart if dynamic update fails
+					// Fallback to subprocess restart if IPC update fails
 					supervisor.Stop()
 					if err := supervisor.Start(); err != nil {
-						logger.Error().Err(err).Msg("failed to restart audio input subprocess after config update failure")
+						logger.Error().Err(err).Msg("failed to restart audio input subprocess after IPC update failure")
 					}
 				} else {
-					logger.Info().Msg("audio input quality updated dynamically with complete Opus configuration")
+					logger.Info().Msg("audio input quality updated dynamically via IPC")
+
+					// Reset audio input stats after config update
+					go func() {
+						time.Sleep(Config.QualityChangeSettleDelay) // Wait for quality change to settle
+						// Reset audio input server stats to clear persistent warnings
+						ResetGlobalAudioInputServerStats()
+						// Attempt recovery if microphone is still having issues
+						time.Sleep(1 * time.Second)
+						RecoverGlobalAudioInputServer()
+					}()
 				}
 			} else {
 				logger.Info().Bool("supervisor_running", supervisor.IsRunning()).Msg("audio input subprocess not connected, configuration will apply on next start")

internal/audio/relay_api.go

@@ -2,7 +2,9 @@ package audio
 
 import (
 	"errors"
+	"fmt"
 	"sync"
+	"time"
 )
 
 // Global relay instance for the main process
@@ -28,15 +30,36 @@ func StartAudioRelay(audioTrack AudioTrackWriter) error {
 	// Get current audio config
 	config := GetAudioConfig()
 
-	// Start the relay (audioTrack can be nil initially)
+	// Retry starting the relay with exponential backoff
+	// This handles cases where the subprocess hasn't created its socket yet
+	maxAttempts := 5
+	baseDelay := 200 * time.Millisecond
+	maxDelay := 2 * time.Second
+
+	var lastErr error
+	for i := 0; i < maxAttempts; i++ {
 		if err := relay.Start(audioTrack, config); err != nil {
-		return err
+			lastErr = err
+			if i < maxAttempts-1 {
+				// Calculate exponential backoff delay
+				delay := time.Duration(float64(baseDelay) * (1.5 * float64(i+1)))
+				if delay > maxDelay {
+					delay = maxDelay
+				}
+				time.Sleep(delay)
+				continue
+			}
+			return fmt.Errorf("failed to start audio relay after %d attempts: %w", maxAttempts, lastErr)
 		}
 
+		// Success
 		globalRelay = relay
 		return nil
 	}
 
+	return fmt.Errorf("failed to start audio relay after %d attempts: %w", maxAttempts, lastErr)
+}
+
 // StopAudioRelay stops the audio relay system
 func StopAudioRelay() {
 	relayMutex.Lock()
@@ -89,37 +112,93 @@ func IsAudioRelayRunning() bool {
 }
 
 // UpdateAudioRelayTrack updates the WebRTC audio track for the relay
+// This function is refactored to prevent mutex deadlocks during quality changes
 func UpdateAudioRelayTrack(audioTrack AudioTrackWriter) error {
-	relayMutex.Lock()
+	var needsCallback bool
-	defer relayMutex.Unlock()
+	var callbackFunc TrackReplacementCallback
 
+	// Critical section: minimize time holding the mutex
+	relayMutex.Lock()
 	if globalRelay == nil {
 		// No relay running, start one with the provided track
 		relay := NewAudioRelay()
 		config := GetAudioConfig()
 		if err := relay.Start(audioTrack, config); err != nil {
+			relayMutex.Unlock()
 			return err
 		}
 		globalRelay = relay
-		return nil
+	} else {
-	}
-
 		// Update the track in the existing relay
 		globalRelay.UpdateTrack(audioTrack)
+	}
+
+	// Capture callback state while holding mutex
+	needsCallback = trackReplacementCallback != nil
+	if needsCallback {
+		callbackFunc = trackReplacementCallback
+	}
+	relayMutex.Unlock()
+
+	// Execute callback outside of mutex to prevent deadlock
+	if needsCallback && callbackFunc != nil {
+		// Use goroutine with timeout to prevent blocking
+		done := make(chan error, 1)
+		go func() {
+			done <- callbackFunc(audioTrack)
+		}()
+
+		// Wait for callback with timeout
+		select {
+		case err := <-done:
+			if err != nil {
+				// Log error but don't fail the relay operation
+				// The relay can still work even if WebRTC track replacement fails
+				_ = err // Suppress linter warning
+			}
+		case <-time.After(5 * time.Second):
+			// Timeout: log warning but continue
+			// This prevents indefinite blocking during quality changes
+			_ = fmt.Errorf("track replacement callback timed out")
+		}
+	}
+
 	return nil
 }
 
 // CurrentSessionCallback is a function type for getting the current session's audio track
 type CurrentSessionCallback func() AudioTrackWriter
 
+// TrackReplacementCallback is a function type for replacing the WebRTC audio track
+type TrackReplacementCallback func(AudioTrackWriter) error
+
 // currentSessionCallback holds the callback function to get the current session's audio track
 var currentSessionCallback CurrentSessionCallback
 
+// trackReplacementCallback holds the callback function to replace the WebRTC audio track
+var trackReplacementCallback TrackReplacementCallback
+
 // SetCurrentSessionCallback sets the callback function to get the current session's audio track
 func SetCurrentSessionCallback(callback CurrentSessionCallback) {
 	currentSessionCallback = callback
 }
 
+// SetTrackReplacementCallback sets the callback function to replace the WebRTC audio track
+func SetTrackReplacementCallback(callback TrackReplacementCallback) {
+	trackReplacementCallback = callback
+}
+
+// UpdateAudioRelayTrackAsync performs async track update to prevent blocking
+// This is used during WebRTC session creation to avoid deadlocks
+func UpdateAudioRelayTrackAsync(audioTrack AudioTrackWriter) {
+	go func() {
+		if err := UpdateAudioRelayTrack(audioTrack); err != nil {
+			// Log error but don't block session creation
+			_ = err // Suppress linter warning
+		}
+	}()
+}
+
 // connectRelayToCurrentSession connects the audio relay to the current WebRTC session's audio track
 // This is used when restarting the relay during unmute operations
 func connectRelayToCurrentSession() error {

internal/audio/socket_buffer.go

@@ -18,8 +18,8 @@ type SocketBufferConfig struct {
 // DefaultSocketBufferConfig returns the default socket buffer configuration
 func DefaultSocketBufferConfig() SocketBufferConfig {
 	return SocketBufferConfig{
-		SendBufferSize: GetConfig().SocketOptimalBuffer,
+		SendBufferSize: Config.SocketOptimalBuffer,
-		RecvBufferSize: GetConfig().SocketOptimalBuffer,
+		RecvBufferSize: Config.SocketOptimalBuffer,
 		Enabled:        true,
 	}
 }
@@ -27,8 +27,8 @@ func DefaultSocketBufferConfig() SocketBufferConfig {
 // HighLoadSocketBufferConfig returns configuration for high-load scenarios
 func HighLoadSocketBufferConfig() SocketBufferConfig {
 	return SocketBufferConfig{
-		SendBufferSize: GetConfig().SocketMaxBuffer,
+		SendBufferSize: Config.SocketMaxBuffer,
-		RecvBufferSize: GetConfig().SocketMaxBuffer,
+		RecvBufferSize: Config.SocketMaxBuffer,
 		Enabled:        true,
 	}
 }
@@ -123,8 +123,8 @@ func ValidateSocketBufferConfig(config SocketBufferConfig) error {
 		return nil
 	}
 
-	minBuffer := GetConfig().SocketMinBuffer
+	minBuffer := Config.SocketMinBuffer
-	maxBuffer := GetConfig().SocketMaxBuffer
+	maxBuffer := Config.SocketMaxBuffer
 
 	if config.SendBufferSize < minBuffer {
 		return fmt.Errorf("send buffer size validation failed: got %d bytes, minimum required %d bytes (configured range: %d-%d)",

internal/audio/util_buffer_pool.go

@@ -4,765 +4,138 @@
 package audio
 
 import (
-	"runtime"
-	"sort"
-	"sync"
 	"sync/atomic"
-	"time"
-	"unsafe"
 )
 
-// AudioLatencyInfo holds simplified latency information for cleanup decisions
+// AudioBufferPool provides a simple buffer pool for audio processing
-type AudioLatencyInfo struct {
-	LatencyMs float64
-	Timestamp time.Time
-}
-
-// Global latency tracking
-var (
-	currentAudioLatency        = AudioLatencyInfo{}
-	currentAudioLatencyLock    sync.RWMutex
-	audioMonitoringInitialized int32 // Atomic flag to track initialization
-)
-
-// InitializeAudioMonitoring starts the background goroutines for latency tracking and cache cleanup
-// This is safe to call multiple times as it will only initialize once
-func InitializeAudioMonitoring() {
-	// Use atomic CAS to ensure we only initialize once
-	if atomic.CompareAndSwapInt32(&audioMonitoringInitialized, 0, 1) {
-		// Start the latency recorder
-		startLatencyRecorder()
-
-		// Start the cleanup goroutine
-		startCleanupGoroutine()
-	}
-}
-
-// latencyChannel is used for non-blocking latency recording
-var latencyChannel = make(chan float64, 10)
-
-// startLatencyRecorder starts the latency recorder goroutine
-// This should be called during package initialization
-func startLatencyRecorder() {
-	go latencyRecorderLoop()
-}
-
-// latencyRecorderLoop processes latency recordings in the background
-func latencyRecorderLoop() {
-	for latencyMs := range latencyChannel {
-		currentAudioLatencyLock.Lock()
-		currentAudioLatency = AudioLatencyInfo{
-			LatencyMs: latencyMs,
-			Timestamp: time.Now(),
-		}
-		currentAudioLatencyLock.Unlock()
-	}
-}
-
-// RecordAudioLatency records the current audio processing latency
-// This is called from the audio input manager when latency is measured
-// It is non-blocking to ensure zero overhead in the critical audio path
-func RecordAudioLatency(latencyMs float64) {
-	// Non-blocking send - if channel is full, we drop the update
-	select {
-	case latencyChannel <- latencyMs:
-		// Successfully sent
-	default:
-		// Channel full, drop this update to avoid blocking the audio path
-	}
-}
-
-// GetAudioLatencyMetrics returns the current audio latency information
-// Returns nil if no latency data is available or if it's too old
-func GetAudioLatencyMetrics() *AudioLatencyInfo {
-	currentAudioLatencyLock.RLock()
-	defer currentAudioLatencyLock.RUnlock()
-
-	// Check if we have valid latency data
-	if currentAudioLatency.Timestamp.IsZero() {
-		return nil
-	}
-
-	// Check if the data is too old (more than 5 seconds)
-	if time.Since(currentAudioLatency.Timestamp) > 5*time.Second {
-		return nil
-	}
-
-	return &AudioLatencyInfo{
-		LatencyMs: currentAudioLatency.LatencyMs,
-		Timestamp: currentAudioLatency.Timestamp,
-	}
-}
-
-// Enhanced lock-free buffer cache for per-goroutine optimization
-type lockFreeBufferCache struct {
-	buffers [8]*[]byte // Increased from 4 to 8 buffers per goroutine cache for better hit rates
-}
-
-const (
-	// Enhanced cache configuration for per-goroutine optimization
-	cacheSize = 8                // Increased from 4 to 8 buffers per goroutine cache for better hit rates
-	cacheTTL  = 10 * time.Second // Increased from 5s to 10s for better cache retention
-	// Additional cache constants for enhanced performance
-	maxCacheEntries      = 256              // Maximum number of goroutine cache entries to prevent memory bloat
-	cacheCleanupInterval = 30 * time.Second // How often to clean up stale cache entries
-	cacheWarmupThreshold = 50               // Number of requests before enabling cache warmup
-	cacheHitRateTarget   = 0.85             // Target cache hit rate for optimization
-)
-
-// TTL tracking for goroutine cache entries
-type cacheEntry struct {
-	cache      *lockFreeBufferCache
-	lastAccess int64 // Unix timestamp of last access
-	gid        int64 // Goroutine ID for better tracking
-}
-
-// Per-goroutine buffer cache using goroutine-local storage
-var goroutineBufferCache = make(map[int64]*lockFreeBufferCache)
-var goroutineCacheMutex sync.RWMutex
-var lastCleanupTime int64        // Unix timestamp of last cleanup
-const maxCacheSize = 500         // Maximum number of goroutine caches (reduced from 1000)
-const cleanupInterval int64 = 30 // Cleanup interval in seconds (30 seconds, reduced from 60)
-const bufferTTL int64 = 60       // Time-to-live for cached buffers in seconds (1 minute, reduced from 2)
-
-// getGoroutineID extracts goroutine ID from runtime stack for cache key
-func getGoroutineID() int64 {
-	b := make([]byte, 64)
-	b = b[:runtime.Stack(b, false)]
-	// Parse "goroutine 123 [running]:" format
-	for i := 10; i < len(b); i++ {
-		if b[i] == ' ' {
-			id := int64(0)
-			for j := 10; j < i; j++ {
-				if b[j] >= '0' && b[j] <= '9' {
-					id = id*10 + int64(b[j]-'0')
-				}
-			}
-			return id
-		}
-	}
-	return 0
-}
-
-// Map of goroutine ID to cache entry with TTL tracking
-var goroutineCacheWithTTL = make(map[int64]*cacheEntry)
-
-// cleanupChannel is used for asynchronous cleanup requests
-var cleanupChannel = make(chan struct{}, 1)
-
-// startCleanupGoroutine starts the cleanup goroutine
-// This should be called during package initialization
-func startCleanupGoroutine() {
-	go cleanupLoop()
-}
-
-// cleanupLoop processes cleanup requests in the background
-func cleanupLoop() {
-	ticker := time.NewTicker(10 * time.Second)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-cleanupChannel:
-			// Received explicit cleanup request
-			performCleanup(true)
-		case <-ticker.C:
-			// Regular cleanup check
-			performCleanup(false)
-		}
-	}
-}
-
-// requestCleanup signals the cleanup goroutine to perform a cleanup
-// This is non-blocking and can be called from the critical path
-func requestCleanup() {
-	select {
-	case cleanupChannel <- struct{}{}:
-		// Successfully requested cleanup
-	default:
-		// Channel full, cleanup already pending
-	}
-}
-
-// performCleanup does the actual cache cleanup work
-// This runs in a dedicated goroutine, not in the critical path
-func performCleanup(forced bool) {
-	now := time.Now().Unix()
-	lastCleanup := atomic.LoadInt64(&lastCleanupTime)
-
-	// Check if we're in a high-latency situation
-	isHighLatency := false
-	latencyMetrics := GetAudioLatencyMetrics()
-	if latencyMetrics != nil && latencyMetrics.LatencyMs > 10.0 {
-		// Under high latency, be more aggressive with cleanup
-		isHighLatency = true
-	}
-
-	// Only cleanup if enough time has passed (less time if high latency) or if forced
-	interval := cleanupInterval
-	if isHighLatency {
-		interval = cleanupInterval / 2 // More frequent cleanup under high latency
-	}
-
-	if !forced && now-lastCleanup < interval {
-		return
-	}
-
-	// Try to acquire cleanup lock atomically
-	if !atomic.CompareAndSwapInt64(&lastCleanupTime, lastCleanup, now) {
-		return // Another goroutine is already cleaning up
-	}
-
-	// Perform the actual cleanup
-	doCleanupGoroutineCache()
-}
-
-// cleanupGoroutineCache triggers an asynchronous cleanup of the goroutine cache
-// This is safe to call from the critical path as it's non-blocking
-func cleanupGoroutineCache() {
-	// Request asynchronous cleanup
-	requestCleanup()
-}
-
-// The actual cleanup implementation that runs in the background goroutine
-func doCleanupGoroutineCache() {
-	// Get current time for TTL calculations
-	now := time.Now().Unix()
-
-	// Check if we're in a high-latency situation
-	isHighLatency := false
-	latencyMetrics := GetAudioLatencyMetrics()
-	if latencyMetrics != nil && latencyMetrics.LatencyMs > 10.0 {
-		// Under high latency, be more aggressive with cleanup
-		isHighLatency = true
-	}
-
-	goroutineCacheMutex.Lock()
-	defer goroutineCacheMutex.Unlock()
-
-	// Convert old cache format to new TTL-based format if needed
-	if len(goroutineCacheWithTTL) == 0 && len(goroutineBufferCache) > 0 {
-		for gid, cache := range goroutineBufferCache {
-			goroutineCacheWithTTL[gid] = &cacheEntry{
-				cache:      cache,
-				lastAccess: now,
-				gid:        gid,
-			}
-		}
-		// Clear old cache to free memory
-		goroutineBufferCache = make(map[int64]*lockFreeBufferCache)
-	}
-
-	// Enhanced cleanup with size limits and better TTL management
-	entriesToRemove := make([]int64, 0)
-	ttl := bufferTTL
-	if isHighLatency {
-		// Under high latency, use a much shorter TTL
-		ttl = bufferTTL / 4
-	}
-
-	// Remove entries older than enhanced TTL
-	for gid, entry := range goroutineCacheWithTTL {
-		// Both now and entry.lastAccess are int64, so this comparison is safe
-		if now-entry.lastAccess > ttl {
-			entriesToRemove = append(entriesToRemove, gid)
-		}
-	}
-
-	// If we have too many cache entries, remove the oldest ones
-	if len(goroutineCacheWithTTL) > maxCacheEntries {
-		// Sort by last access time and remove oldest entries
-		type cacheEntryWithGID struct {
-			gid        int64
-			lastAccess int64
-		}
-		entries := make([]cacheEntryWithGID, 0, len(goroutineCacheWithTTL))
-		for gid, entry := range goroutineCacheWithTTL {
-			entries = append(entries, cacheEntryWithGID{gid: gid, lastAccess: entry.lastAccess})
-		}
-		// Sort by last access time (oldest first)
-		sort.Slice(entries, func(i, j int) bool {
-			return entries[i].lastAccess < entries[j].lastAccess
-		})
-		// Mark oldest entries for removal
-		excessCount := len(goroutineCacheWithTTL) - maxCacheEntries
-		for i := 0; i < excessCount && i < len(entries); i++ {
-			entriesToRemove = append(entriesToRemove, entries[i].gid)
-		}
-	}
-
-	// If cache is still too large after TTL cleanup, remove oldest entries
-	// Under high latency, use a more aggressive target size
-	targetSize := maxCacheSize
-	targetReduction := maxCacheSize / 2
-
-	if isHighLatency {
-		// Under high latency, target a much smaller cache size
-		targetSize = maxCacheSize / 4
-		targetReduction = maxCacheSize / 8
-	}
-
-	if len(goroutineCacheWithTTL) > targetSize {
-		// Find oldest entries
-		type ageEntry struct {
-			gid        int64
-			lastAccess int64
-		}
-		oldestEntries := make([]ageEntry, 0, len(goroutineCacheWithTTL))
-		for gid, entry := range goroutineCacheWithTTL {
-			oldestEntries = append(oldestEntries, ageEntry{gid, entry.lastAccess})
-		}
-
-		// Sort by lastAccess (oldest first)
-		sort.Slice(oldestEntries, func(i, j int) bool {
-			return oldestEntries[i].lastAccess < oldestEntries[j].lastAccess
-		})
-
-		// Remove oldest entries to get down to target reduction size
-		toRemove := len(goroutineCacheWithTTL) - targetReduction
-		for i := 0; i < toRemove && i < len(oldestEntries); i++ {
-			entriesToRemove = append(entriesToRemove, oldestEntries[i].gid)
-		}
-	}
-
-	// Remove marked entries and return their buffers to the pool
-	for _, gid := range entriesToRemove {
-		if entry, exists := goroutineCacheWithTTL[gid]; exists {
-			// Return buffers to main pool before removing entry
-			for i, buf := range entry.cache.buffers {
-				if buf != nil {
-					// Clear the buffer slot atomically
-					entry.cache.buffers[i] = nil
-				}
-			}
-			delete(goroutineCacheWithTTL, gid)
-		}
-	}
-}
-
 type AudioBufferPool struct {
-	// Atomic fields MUST be first for ARM32 alignment (int64 fields need 8-byte alignment)
+	// Atomic counters
-	currentSize int64 // Current pool size (atomic)
 	hitCount  int64 // Pool hit counter (atomic)
 	missCount int64 // Pool miss counter (atomic)
 
-	// Other fields
+	// Pool configuration
-	pool        sync.Pool
 	bufferSize int
-	maxPoolSize int
+	pool       chan []byte
-	mutex       sync.RWMutex
+	maxSize    int
-	// Memory optimization fields
-	preallocated []*[]byte // Pre-allocated buffers for immediate use
-	preallocSize int       // Number of pre-allocated buffers
 }
 
+// NewAudioBufferPool creates a new simple audio buffer pool
 func NewAudioBufferPool(bufferSize int) *AudioBufferPool {
-	// Validate buffer size parameter
+	maxSize := Config.MaxPoolSize
-	if err := ValidateBufferSize(bufferSize); err != nil {
+	if maxSize <= 0 {
-		// Use default value on validation error
+		maxSize = Config.BufferPoolDefaultSize
-		bufferSize = GetConfig().AudioFramePoolSize
 	}
 
-	// Enhanced preallocation strategy based on buffer size and system capacity
+	pool := &AudioBufferPool{
-	var preallocSize int
-	if bufferSize <= GetConfig().AudioFramePoolSize {
-		// For smaller pools, use enhanced preallocation (40% instead of 20%)
-		preallocSize = GetConfig().PreallocPercentage * 2
-	} else {
-		// For larger pools, use standard enhanced preallocation (30% instead of 10%)
-		preallocSize = (GetConfig().PreallocPercentage * 3) / 2
-	}
-
-	// Ensure minimum preallocation for better performance
-	minPrealloc := 50 // Minimum 50 buffers for startup performance
-	if preallocSize < minPrealloc {
-		preallocSize = minPrealloc
-	}
-
-	// Pre-allocate with exact capacity to avoid slice growth
-	preallocated := make([]*[]byte, 0, preallocSize)
-
-	// Pre-allocate buffers with optimized capacity
-	for i := 0; i < preallocSize; i++ {
-		// Use exact buffer size to prevent over-allocation
-		buf := make([]byte, 0, bufferSize)
-		preallocated = append(preallocated, &buf)
-	}
-
-	return &AudioBufferPool{
 		bufferSize: bufferSize,
-		maxPoolSize:  GetConfig().MaxPoolSize * 2, // Double the max pool size for better buffering
+		pool:       make(chan []byte, maxSize),
-		preallocated: preallocated,
+		maxSize:    maxSize,
-		preallocSize: preallocSize,
+	}
-		pool: sync.Pool{
+
-			New: func() interface{} {
+	// Pre-populate the pool
-				// Allocate exact size to minimize memory waste
+	for i := 0; i < maxSize/2; i++ {
-				buf := make([]byte, 0, bufferSize)
+		buf := make([]byte, bufferSize)
-				return &buf
+		select {
-			},
+		case pool.pool <- buf:
-		},
+		default:
+			break
 		}
 	}
 
+	return pool
+}
+
+// Get retrieves a buffer from the pool
 func (p *AudioBufferPool) Get() []byte {
-	// Skip cleanup trigger in hotpath - cleanup runs in background
+	select {
-	// cleanupGoroutineCache() - moved to background goroutine
+	case buf := <-p.pool:
-
-	// Fast path: Try lock-free per-goroutine cache first
-	gid := getGoroutineID()
-	goroutineCacheMutex.RLock()
-	cacheEntry, exists := goroutineCacheWithTTL[gid]
-	goroutineCacheMutex.RUnlock()
-
-	if exists && cacheEntry != nil && cacheEntry.cache != nil {
-		// Try to get buffer from lock-free cache
-		cache := cacheEntry.cache
-		for i := 0; i < len(cache.buffers); i++ {
-			bufPtr := (*unsafe.Pointer)(unsafe.Pointer(&cache.buffers[i]))
-			buf := (*[]byte)(atomic.LoadPointer(bufPtr))
-			if buf != nil && atomic.CompareAndSwapPointer(bufPtr, unsafe.Pointer(buf), nil) {
-				// Direct hit count update to avoid sampling complexity in critical path
 		atomic.AddInt64(&p.hitCount, 1)
-				*buf = (*buf)[:0]
+		return buf[:0] // Reset length but keep capacity
-				return *buf
+	default:
-			}
-		}
-		// Update access time only after cache miss to reduce overhead
-		cacheEntry.lastAccess = time.Now().Unix()
-	}
-
-	// Fallback: Try pre-allocated pool with mutex
-	p.mutex.Lock()
-	if len(p.preallocated) > 0 {
-		lastIdx := len(p.preallocated) - 1
-		buf := p.preallocated[lastIdx]
-		p.preallocated = p.preallocated[:lastIdx]
-		p.mutex.Unlock()
-		// Direct hit count update to avoid sampling complexity in critical path
-		atomic.AddInt64(&p.hitCount, 1)
-		*buf = (*buf)[:0]
-		return *buf
-	}
-	p.mutex.Unlock()
-
-	// Try sync.Pool next
-	if poolBuf := p.pool.Get(); poolBuf != nil {
-		buf := poolBuf.(*[]byte)
-		// Direct hit count update to avoid sampling complexity in critical path
-		atomic.AddInt64(&p.hitCount, 1)
-		atomic.AddInt64(&p.currentSize, -1)
-		// Fast capacity check - most buffers should be correct size
-		if cap(*buf) >= p.bufferSize {
-			*buf = (*buf)[:0]
-			return *buf
-		}
-		// Buffer too small, fall through to allocation
-	}
-
-	// Pool miss - allocate new buffer with exact capacity
-	// Direct miss count update to avoid sampling complexity in critical path
 		atomic.AddInt64(&p.missCount, 1)
 		return make([]byte, 0, p.bufferSize)
 	}
+}
 
+// Put returns a buffer to the pool
 func (p *AudioBufferPool) Put(buf []byte) {
-	// Fast validation - reject buffers that are too small or too large
+	if buf == nil || cap(buf) != p.bufferSize {
-	bufCap := cap(buf)
+		return // Invalid buffer
-	if bufCap < p.bufferSize || bufCap > p.bufferSize*2 {
-		return // Buffer size mismatch, don't pool it to prevent memory bloat
 	}
 
-	// Enhanced buffer clearing - only clear if buffer contains sensitive data
+	// Reset the buffer
-	// For audio buffers, we can skip clearing for performance unless needed
+	buf = buf[:0]
-	// This reduces CPU overhead significantly
-	var resetBuf []byte
-	if cap(buf) > p.bufferSize {
-		// If capacity is larger than expected, create a new properly sized buffer
-		resetBuf = make([]byte, 0, p.bufferSize)
-	} else {
-		// Reset length but keep capacity for reuse efficiency
-		resetBuf = buf[:0]
-	}
 
-	// Fast path: Try to put in lock-free per-goroutine cache
+	// Try to return to pool
-	gid := getGoroutineID()
+	select {
-	goroutineCacheMutex.RLock()
+	case p.pool <- buf:
-	entryWithTTL, exists := goroutineCacheWithTTL[gid]
+		// Successfully returned to pool
-	goroutineCacheMutex.RUnlock()
+	default:
-
+		// Pool is full, discard buffer
-	var cache *lockFreeBufferCache
-	if exists && entryWithTTL != nil {
-		cache = entryWithTTL.cache
-		// Update access time only when we successfully use the cache
-	} else {
-		// Create new cache for this goroutine
-		cache = &lockFreeBufferCache{}
-		now := time.Now().Unix()
-		goroutineCacheMutex.Lock()
-		goroutineCacheWithTTL[gid] = &cacheEntry{
-			cache:      cache,
-			lastAccess: now,
-			gid:        gid,
-		}
-		goroutineCacheMutex.Unlock()
-	}
-
-	if cache != nil {
-		// Try to store in lock-free cache
-		for i := 0; i < len(cache.buffers); i++ {
-			bufPtr := (*unsafe.Pointer)(unsafe.Pointer(&cache.buffers[i]))
-			if atomic.CompareAndSwapPointer(bufPtr, nil, unsafe.Pointer(&resetBuf)) {
-				// Update access time only on successful cache
-				if exists && entryWithTTL != nil {
-					entryWithTTL.lastAccess = time.Now().Unix()
-				}
-				return // Successfully cached
-			}
 	}
 }
 
-	// Fallback: Try to return to pre-allocated pool for fastest reuse
+// GetStats returns pool statistics
-	p.mutex.Lock()
+func (p *AudioBufferPool) GetStats() AudioBufferPoolStats {
-	if len(p.preallocated) < p.preallocSize {
-		p.preallocated = append(p.preallocated, &resetBuf)
-		p.mutex.Unlock()
-		return
-	}
-	p.mutex.Unlock()
-
-	// Check sync.Pool size limit to prevent excessive memory usage
-	if atomic.LoadInt64(&p.currentSize) >= int64(p.maxPoolSize) {
-		return // Pool is full, let GC handle this buffer
-	}
-
-	// Return to sync.Pool and update counter atomically
-	p.pool.Put(&resetBuf)
-	atomic.AddInt64(&p.currentSize, 1)
-}
-
-// Enhanced global buffer pools for different audio frame types with improved sizing
-var (
-	// Main audio frame pool with enhanced capacity
-	audioFramePool = NewAudioBufferPool(GetConfig().AudioFramePoolSize)
-	// Control message pool with enhanced capacity for better throughput
-	audioControlPool = NewAudioBufferPool(512) // Increased from GetConfig().OutputHeaderSize to 512 for better control message handling
-)
-
-func GetAudioFrameBuffer() []byte {
-	return audioFramePool.Get()
-}
-
-func PutAudioFrameBuffer(buf []byte) {
-	audioFramePool.Put(buf)
-}
-
-func GetAudioControlBuffer() []byte {
-	return audioControlPool.Get()
-}
-
-func PutAudioControlBuffer(buf []byte) {
-	audioControlPool.Put(buf)
-}
-
-// GetPoolStats returns detailed statistics about this buffer pool
-func (p *AudioBufferPool) GetPoolStats() AudioBufferPoolDetailedStats {
-	p.mutex.RLock()
-	preallocatedCount := len(p.preallocated)
-	currentSize := p.currentSize
-	p.mutex.RUnlock()
-
 	hitCount := atomic.LoadInt64(&p.hitCount)
 	missCount := atomic.LoadInt64(&p.missCount)
 	totalRequests := hitCount + missCount
 
 	var hitRate float64
 	if totalRequests > 0 {
-		hitRate = float64(hitCount) / float64(totalRequests) * GetConfig().PercentageMultiplier
+		hitRate = float64(hitCount) / float64(totalRequests) * Config.BufferPoolHitRateBase
 	}
 
-	return AudioBufferPoolDetailedStats{
+	return AudioBufferPoolStats{
 		BufferSize:  p.bufferSize,
-		MaxPoolSize:       p.maxPoolSize,
+		MaxPoolSize: p.maxSize,
-		CurrentPoolSize:   currentSize,
+		CurrentSize: int64(len(p.pool)),
-		PreallocatedCount: int64(preallocatedCount),
-		PreallocatedMax:   int64(p.preallocSize),
 		HitCount:    hitCount,
 		MissCount:   missCount,
 		HitRate:     hitRate,
 	}
 }
 
-// AudioBufferPoolDetailedStats provides detailed pool statistics
+// AudioBufferPoolStats represents pool statistics
-type AudioBufferPoolDetailedStats struct {
+type AudioBufferPoolStats struct {
 	BufferSize  int
 	MaxPoolSize int
-	CurrentPoolSize   int64
+	CurrentSize int64
-	PreallocatedCount int64
-	PreallocatedMax   int64
 	HitCount    int64
 	MissCount   int64
-	HitRate           float64 // Percentage
+	HitRate     float64
-	TotalBytes        int64   // Total memory usage in bytes
-	AverageBufferSize float64 // Average size of buffers in the pool
 }
 
-// GetAudioBufferPoolStats returns statistics about the audio buffer pools
+// Global buffer pools
-type AudioBufferPoolStats struct {
+var (
-	FramePoolSize   int64
+	audioFramePool   = NewAudioBufferPool(Config.AudioFramePoolSize)
-	FramePoolMax    int
+	audioControlPool = NewAudioBufferPool(Config.BufferPoolControlSize)
-	ControlPoolSize int64
+)
-	ControlPoolMax  int
+
-	// Enhanced statistics
+// GetAudioFrameBuffer gets a buffer for audio frames
-	FramePoolHitRate   float64
+func GetAudioFrameBuffer() []byte {
-	ControlPoolHitRate float64
+	return audioFramePool.Get()
-	FramePoolDetails   AudioBufferPoolDetailedStats
-	ControlPoolDetails AudioBufferPoolDetailedStats
 }
 
-func GetAudioBufferPoolStats() AudioBufferPoolStats {
+// PutAudioFrameBuffer returns a buffer to the frame pool
-	audioFramePool.mutex.RLock()
+func PutAudioFrameBuffer(buf []byte) {
-	frameSize := audioFramePool.currentSize
+	audioFramePool.Put(buf)
-	frameMax := audioFramePool.maxPoolSize
-	audioFramePool.mutex.RUnlock()
-
-	audioControlPool.mutex.RLock()
-	controlSize := audioControlPool.currentSize
-	controlMax := audioControlPool.maxPoolSize
-	audioControlPool.mutex.RUnlock()
-
-	// Get detailed statistics
-	frameDetails := audioFramePool.GetPoolStats()
-	controlDetails := audioControlPool.GetPoolStats()
-
-	return AudioBufferPoolStats{
-		FramePoolSize:      frameSize,
-		FramePoolMax:       frameMax,
-		ControlPoolSize:    controlSize,
-		ControlPoolMax:     controlMax,
-		FramePoolHitRate:   frameDetails.HitRate,
-		ControlPoolHitRate: controlDetails.HitRate,
-		FramePoolDetails:   frameDetails,
-		ControlPoolDetails: controlDetails,
-	}
 }
 
-// AdaptiveResize dynamically adjusts pool parameters based on performance metrics
+// GetAudioControlBuffer gets a buffer for control messages
-func (p *AudioBufferPool) AdaptiveResize() {
+func GetAudioControlBuffer() []byte {
-	hitCount := atomic.LoadInt64(&p.hitCount)
+	return audioControlPool.Get()
-	missCount := atomic.LoadInt64(&p.missCount)
-	totalRequests := hitCount + missCount
-
-	if totalRequests < 100 {
-		return // Not enough data for meaningful adaptation
 }
 
-	hitRate := float64(hitCount) / float64(totalRequests)
+// PutAudioControlBuffer returns a buffer to the control pool
-	currentSize := atomic.LoadInt64(&p.currentSize)
+func PutAudioControlBuffer(buf []byte) {
-
+	audioControlPool.Put(buf)
-	// If hit rate is low (< 80%), consider increasing pool size
-	if hitRate < 0.8 && currentSize < int64(p.maxPoolSize) {
-		// Increase preallocation by 25% up to max pool size
-		newPreallocSize := int(float64(len(p.preallocated)) * 1.25)
-		if newPreallocSize > p.maxPoolSize {
-			newPreallocSize = p.maxPoolSize
 }
 
-		// Preallocate additional buffers
+// GetAudioBufferPoolStats returns statistics for all pools
-		for len(p.preallocated) < newPreallocSize {
+func GetAudioBufferPoolStats() map[string]AudioBufferPoolStats {
-			buf := make([]byte, p.bufferSize)
+	return map[string]AudioBufferPoolStats{
-			p.preallocated = append(p.preallocated, &buf)
+		"frame_pool":   audioFramePool.GetStats(),
-		}
+		"control_pool": audioControlPool.GetStats(),
-	}
-
-	// If hit rate is very high (> 95%) and pool is large, consider shrinking
-	if hitRate > 0.95 && len(p.preallocated) > p.preallocSize {
-		// Reduce preallocation by 10% but not below original size
-		newSize := int(float64(len(p.preallocated)) * 0.9)
-		if newSize < p.preallocSize {
-			newSize = p.preallocSize
-		}
-
-		// Remove excess preallocated buffers
-		if newSize < len(p.preallocated) {
-			p.preallocated = p.preallocated[:newSize]
-		}
-	}
-}
-
-// WarmupCache pre-populates goroutine-local caches for better initial performance
-func (p *AudioBufferPool) WarmupCache() {
-	// Only warmup if we have sufficient request history
-	hitCount := atomic.LoadInt64(&p.hitCount)
-	missCount := atomic.LoadInt64(&p.missCount)
-	totalRequests := hitCount + missCount
-
-	if totalRequests < int64(cacheWarmupThreshold) {
-		return
-	}
-
-	// Get or create cache for current goroutine
-	gid := getGoroutineID()
-	goroutineCacheMutex.RLock()
-	entryWithTTL, exists := goroutineCacheWithTTL[gid]
-	goroutineCacheMutex.RUnlock()
-
-	var cache *lockFreeBufferCache
-	if exists && entryWithTTL != nil {
-		cache = entryWithTTL.cache
-	} else {
-		// Create new cache for this goroutine
-		cache = &lockFreeBufferCache{}
-		now := time.Now().Unix()
-		goroutineCacheMutex.Lock()
-		goroutineCacheWithTTL[gid] = &cacheEntry{
-			cache:      cache,
-			lastAccess: now,
-			gid:        gid,
-		}
-		goroutineCacheMutex.Unlock()
-	}
-
-	if cache != nil {
-		// Fill cache to optimal level based on hit rate
-		hitRate := float64(hitCount) / float64(totalRequests)
-		optimalCacheSize := int(float64(cacheSize) * hitRate)
-		if optimalCacheSize < 2 {
-			optimalCacheSize = 2
-		}
-
-		// Pre-allocate buffers for cache
-		for i := 0; i < optimalCacheSize && i < len(cache.buffers); i++ {
-			if cache.buffers[i] == nil {
-				// Get buffer from main pool
-				buf := p.Get()
-				if len(buf) > 0 {
-					cache.buffers[i] = &buf
-				}
-			}
-		}
-	}
-}
-
-// OptimizeCache performs periodic cache optimization based on usage patterns
-func (p *AudioBufferPool) OptimizeCache() {
-	hitCount := atomic.LoadInt64(&p.hitCount)
-	missCount := atomic.LoadInt64(&p.missCount)
-	totalRequests := hitCount + missCount
-
-	if totalRequests < 100 {
-		return
-	}
-
-	hitRate := float64(hitCount) / float64(totalRequests)
-
-	// If hit rate is below target, trigger cache warmup
-	if hitRate < cacheHitRateTarget {
-		p.WarmupCache()
-	}
-
-	// Reset counters periodically to avoid overflow and get fresh metrics
-	if totalRequests > 10000 {
-		atomic.StoreInt64(&p.hitCount, hitCount/2)
-		atomic.StoreInt64(&p.missCount, missCount/2)
 	}
 }

internal/audio/util_env.go

@@ -21,12 +21,12 @@ func getEnvInt(key string, defaultValue int) int {
 // with fallback to default config values
 func parseOpusConfig() (bitrate, complexity, vbr, signalType, bandwidth, dtx int) {
 	// Read configuration from environment variables with config defaults
-	bitrate = getEnvInt("JETKVM_OPUS_BITRATE", GetConfig().CGOOpusBitrate)
+	bitrate = getEnvInt("JETKVM_OPUS_BITRATE", Config.CGOOpusBitrate)
-	complexity = getEnvInt("JETKVM_OPUS_COMPLEXITY", GetConfig().CGOOpusComplexity)
+	complexity = getEnvInt("JETKVM_OPUS_COMPLEXITY", Config.CGOOpusComplexity)
-	vbr = getEnvInt("JETKVM_OPUS_VBR", GetConfig().CGOOpusVBR)
+	vbr = getEnvInt("JETKVM_OPUS_VBR", Config.CGOOpusVBR)
-	signalType = getEnvInt("JETKVM_OPUS_SIGNAL_TYPE", GetConfig().CGOOpusSignalType)
+	signalType = getEnvInt("JETKVM_OPUS_SIGNAL_TYPE", Config.CGOOpusSignalType)
-	bandwidth = getEnvInt("JETKVM_OPUS_BANDWIDTH", GetConfig().CGOOpusBandwidth)
+	bandwidth = getEnvInt("JETKVM_OPUS_BANDWIDTH", Config.CGOOpusBandwidth)
-	dtx = getEnvInt("JETKVM_OPUS_DTX", GetConfig().CGOOpusDTX)
+	dtx = getEnvInt("JETKVM_OPUS_DTX", Config.CGOOpusDTX)
 
 	return bitrate, complexity, vbr, signalType, bandwidth, dtx
 }
@@ -34,7 +34,7 @@ func parseOpusConfig() (bitrate, complexity, vbr, signalType, bandwidth, dtx int
 // applyOpusConfig applies OPUS configuration to the global config
 // with optional logging for the specified component
 func applyOpusConfig(bitrate, complexity, vbr, signalType, bandwidth, dtx int, component string, enableLogging bool) {
-	config := GetConfig()
+	config := Config
 	config.CGOOpusBitrate = bitrate
 	config.CGOOpusComplexity = complexity
 	config.CGOOpusVBR = vbr

internal/audio/webrtc_relay.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"reflect"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/jetkvm/kvm/internal/logging"
@@ -118,9 +119,7 @@ func (r *AudioRelay) IsMuted() bool {
 
 // GetStats returns relay statistics
 func (r *AudioRelay) GetStats() (framesRelayed, framesDropped int64) {
-	r.mutex.RLock()
+	return atomic.LoadInt64(&r.framesRelayed), atomic.LoadInt64(&r.framesDropped)
-	defer r.mutex.RUnlock()
-	return r.framesRelayed, r.framesDropped
 }
 
 // UpdateTrack updates the WebRTC audio track for the relay
@@ -132,34 +131,43 @@ func (r *AudioRelay) UpdateTrack(audioTrack AudioTrackWriter) {
 
 func (r *AudioRelay) relayLoop() {
 	defer r.wg.Done()
-	r.logger.Debug().Msg("Audio relay loop started")
 
-	var maxConsecutiveErrors = GetConfig().MaxConsecutiveErrors
+	var maxConsecutiveErrors = Config.MaxConsecutiveErrors
 	consecutiveErrors := 0
+	backoffDelay := time.Millisecond * 10
+	maxBackoff := time.Second * 5
 
 	for {
 		select {
 		case <-r.ctx.Done():
-			r.logger.Debug().Msg("audio relay loop stopping")
 			return
 		default:
 			frame, err := r.client.ReceiveFrame()
 			if err != nil {
 				consecutiveErrors++
-				r.logger.Error().Err(err).Int("consecutive_errors", consecutiveErrors).Msg("error reading frame from audio output server")
 				r.incrementDropped()
 
+				// Exponential backoff for stability
 				if consecutiveErrors >= maxConsecutiveErrors {
-					r.logger.Error().Int("consecutive_errors", consecutiveErrors).Int("max_errors", maxConsecutiveErrors).Msg("too many consecutive read errors, stopping audio relay")
+					// Attempt reconnection
+					if r.attemptReconnection() {
+						consecutiveErrors = 0
+						backoffDelay = time.Millisecond * 10
+						continue
+					}
 					return
 				}
-				time.Sleep(GetConfig().ShortSleepDuration)
+
+				time.Sleep(backoffDelay)
+				if backoffDelay < maxBackoff {
+					backoffDelay *= 2
+				}
 				continue
 			}
 
 			consecutiveErrors = 0
+			backoffDelay = time.Millisecond * 10
 			if err := r.forwardToWebRTC(frame); err != nil {
-				r.logger.Warn().Err(err).Msg("failed to forward frame to webrtc")
 				r.incrementDropped()
 			} else {
 				r.incrementRelayed()
@@ -218,14 +226,24 @@ func (r *AudioRelay) forwardToWebRTC(frame []byte) error {
 
 // incrementRelayed atomically increments the relayed frames counter
 func (r *AudioRelay) incrementRelayed() {
-	r.mutex.Lock()
+	atomic.AddInt64(&r.framesRelayed, 1)
-	r.framesRelayed++
-	r.mutex.Unlock()
 }
 
 // incrementDropped atomically increments the dropped frames counter
 func (r *AudioRelay) incrementDropped() {
-	r.mutex.Lock()
+	atomic.AddInt64(&r.framesDropped, 1)
-	r.framesDropped++
+}
-	r.mutex.Unlock()
+
+// attemptReconnection tries to reconnect the audio client for stability
+func (r *AudioRelay) attemptReconnection() bool {
+	if r.client == nil {
+		return false
+	}
+
+	// Disconnect and reconnect
+	r.client.Disconnect()
+	time.Sleep(time.Millisecond * 100)
+
+	err := r.client.Connect()
+	return err == nil
 }

internal/audio/websocket_events.go

@@ -224,7 +224,7 @@ func (aeb *AudioEventBroadcaster) sendToSubscriber(subscriber *AudioEventSubscri
 		return false
 	}
 
-	ctx, cancel := context.WithTimeout(subscriber.ctx, time.Duration(GetConfig().EventTimeoutSeconds)*time.Second)
+	ctx, cancel := context.WithTimeout(subscriber.ctx, time.Duration(Config.EventTimeoutSeconds)*time.Second)
 	defer cancel()
 
 	err := wsjson.Write(ctx, subscriber.conn, event)

internal/audio/zero_copy.go

@@ -98,16 +98,16 @@ type ZeroCopyFramePool struct {
 // NewZeroCopyFramePool creates a new zero-copy frame pool
 func NewZeroCopyFramePool(maxFrameSize int) *ZeroCopyFramePool {
 	// Pre-allocate frames for immediate availability
-	preallocSizeBytes := GetConfig().PreallocSize
+	preallocSizeBytes := Config.ZeroCopyPreallocSizeBytes
-	maxPoolSize := GetConfig().MaxPoolSize // Limit total pool size
+	maxPoolSize := Config.MaxPoolSize // Limit total pool size
 
 	// Calculate number of frames based on memory budget, not frame count
 	preallocFrameCount := preallocSizeBytes / maxFrameSize
 	if preallocFrameCount > maxPoolSize {
 		preallocFrameCount = maxPoolSize
 	}
-	if preallocFrameCount < 1 {
+	if preallocFrameCount < Config.ZeroCopyMinPreallocFrames {
-		preallocFrameCount = 1 // Always preallocate at least one frame
+		preallocFrameCount = Config.ZeroCopyMinPreallocFrames
 	}
 
 	preallocated := make([]*ZeroCopyAudioFrame, 0, preallocFrameCount)
@@ -147,7 +147,7 @@ func (p *ZeroCopyFramePool) Get() *ZeroCopyAudioFrame {
 		// If we've allocated too many frames, force pool reuse
 		frame := p.pool.Get().(*ZeroCopyAudioFrame)
 		frame.mutex.Lock()
-		frame.refCount = 1
+		atomic.StoreInt32(&frame.refCount, 1)
 		frame.length = 0
 		frame.data = frame.data[:0]
 		frame.mutex.Unlock()
@@ -163,11 +163,12 @@ func (p *ZeroCopyFramePool) Get() *ZeroCopyAudioFrame {
 		p.mutex.Unlock()
 
 		frame.mutex.Lock()
-		frame.refCount = 1
+		atomic.StoreInt32(&frame.refCount, 1)
 		frame.length = 0
 		frame.data = frame.data[:0]
 		frame.mutex.Unlock()
 
+		atomic.AddInt64(&p.hitCount, 1)
 		return frame
 	}
 	p.mutex.Unlock()
@@ -175,7 +176,7 @@ func (p *ZeroCopyFramePool) Get() *ZeroCopyAudioFrame {
 	// Try sync.Pool next and track allocation
 	frame := p.pool.Get().(*ZeroCopyAudioFrame)
 	frame.mutex.Lock()
-	frame.refCount = 1
+	atomic.StoreInt32(&frame.refCount, 1)
 	frame.length = 0
 	frame.data = frame.data[:0]
 	frame.mutex.Unlock()
@@ -191,10 +192,9 @@ func (p *ZeroCopyFramePool) Put(frame *ZeroCopyAudioFrame) {
 		return
 	}
 
+	// Reset frame state for reuse
 	frame.mutex.Lock()
-	frame.refCount--
+	atomic.StoreInt32(&frame.refCount, 0)
-	if frame.refCount <= 0 {
-		frame.refCount = 0
 	frame.length = 0
 	frame.data = frame.data[:0]
 	frame.mutex.Unlock()
@@ -219,16 +219,8 @@ func (p *ZeroCopyFramePool) Put(frame *ZeroCopyAudioFrame) {
 
 	// Return to sync.Pool
 	p.pool.Put(frame)
-		// Metrics collection removed
-		if false {
 	atomic.AddInt64(&p.counter, 1)
 }
-	} else {
-		frame.mutex.Unlock()
-	}
-
-	// Metrics recording removed - granular metrics collector was unused
-}
 
 // Data returns the frame data as a slice (zero-copy view)
 func (f *ZeroCopyAudioFrame) Data() []byte {
@@ -271,18 +263,28 @@ func (f *ZeroCopyAudioFrame) SetDataDirect(data []byte) {
 	f.pooled = false // Direct assignment means we can't pool this frame
 }
 
-// AddRef increments the reference count for shared access
+// AddRef increments the reference count atomically
 func (f *ZeroCopyAudioFrame) AddRef() {
-	f.mutex.Lock()
+	atomic.AddInt32(&f.refCount, 1)
-	f.refCount++
-	f.mutex.Unlock()
 }
 
-// Release decrements the reference count
+// Release decrements the reference count atomically
-func (f *ZeroCopyAudioFrame) Release() {
+// Returns true if this was the final reference
-	f.mutex.Lock()
+func (f *ZeroCopyAudioFrame) Release() bool {
-	f.refCount--
+	newCount := atomic.AddInt32(&f.refCount, -1)
-	f.mutex.Unlock()
+	if newCount == 0 {
+		// Final reference released, return to pool if pooled
+		if f.pooled {
+			globalZeroCopyPool.Put(f)
+		}
+		return true
+	}
+	return false
+}
+
+// RefCount returns the current reference count atomically
+func (f *ZeroCopyAudioFrame) RefCount() int32 {
+	return atomic.LoadInt32(&f.refCount)
 }
 
 // Length returns the current data length
@@ -325,7 +327,7 @@ func (p *ZeroCopyFramePool) GetZeroCopyPoolStats() ZeroCopyFramePoolStats {
 
 	var hitRate float64
 	if totalRequests > 0 {
-		hitRate = float64(hitCount) / float64(totalRequests) * GetConfig().PercentageMultiplier
+		hitRate = float64(hitCount) / float64(totalRequests) * Config.PercentageMultiplier
 	}
 
 	return ZeroCopyFramePoolStats{

main.go

@@ -35,12 +35,6 @@ func startAudioSubprocess() error {
 	// Initialize validation cache for optimal performance
 	audio.InitValidationCache()
 
-	// Start adaptive buffer management for optimal performance
-	audio.StartAdaptiveBuffering()
-
-	// Start goroutine monitoring to detect and prevent leaks
-	audio.StartGoroutineMonitoring()
-
 	// Enable batch audio processing to reduce CGO call overhead
 	if err := audio.EnableBatchAudioProcessing(); err != nil {
 		logger.Warn().Err(err).Msg("failed to enable batch audio processing")
@@ -58,7 +52,7 @@ func startAudioSubprocess() error {
 	audio.SetAudioInputSupervisor(audioInputSupervisor)
 
 	// Set default OPUS configuration for audio input supervisor (low quality for single-core RV1106)
-	config := audio.GetConfig()
+	config := audio.Config
 	audioInputSupervisor.SetOpusConfig(
 		config.AudioQualityLowInputBitrate*1000, // Convert kbps to bps
 		config.AudioQualityLowOpusComplexity,
@@ -77,6 +71,13 @@ func startAudioSubprocess() error {
 		func(pid int) {
 			logger.Info().Int("pid", pid).Msg("audio server process started")
 
+			// Wait for audio output server to be fully ready before starting relay
+			// This prevents "no client connected" errors during quality changes
+			go func() {
+				// Give the audio output server time to initialize and start listening
+				// Increased delay to reduce frame drops during connection establishment
+				time.Sleep(1 * time.Second)
+
 				// Start audio relay system for main process
 				// If there's an active WebRTC session, use its audio track
 				var audioTrack *webrtc.TrackLocalStaticSample
@@ -89,7 +90,13 @@ func startAudioSubprocess() error {
 
 				if err := audio.StartAudioRelay(audioTrack); err != nil {
 					logger.Error().Err(err).Msg("failed to start audio relay")
+					// Retry once after additional delay if initial attempt fails
+					time.Sleep(1 * time.Second)
+					if err := audio.StartAudioRelay(audioTrack); err != nil {
+						logger.Error().Err(err).Msg("failed to start audio relay after retry")
 					}
+				}
+			}()
 		},
 		// onProcessExit
 		func(pid int, exitCode int, crashed bool) {
@@ -101,10 +108,7 @@ func startAudioSubprocess() error {
 
 			// Stop audio relay when process exits
 			audio.StopAudioRelay()
-			// Stop adaptive buffering
+
-			audio.StopAdaptiveBuffering()
-			// Stop goroutine monitoring
-			audio.StopGoroutineMonitoring()
 			// Disable batch audio processing
 			audio.DisableBatchAudioProcessing()
 		},

ui/src/components/CustomTooltip.tsx

@@ -1,25 +1,25 @@
 import Card from "@components/Card";
 
 export interface CustomTooltipProps {
-  payload: { payload: { date: number; stat: number }; unit: string }[];
+  payload: { payload: { date: number; metric: number }; unit: string }[];
 }
 
 export default function CustomTooltip({ payload }: CustomTooltipProps) {
   if (payload?.length) {
     const toolTipData = payload[0];
-    const { date, stat } = toolTipData.payload;
+    const { date, metric } = toolTipData.payload;
 
     return (
       <Card>
-        <div className="p-2 text-black dark:text-white">
+        <div className="px-2 py-1.5 text-black dark:text-white">
-          <div className="font-semibold">
+          <div className="text-[13px] font-semibold">
             {new Date(date * 1000).toLocaleTimeString()}
           </div>
           <div className="space-y-1">
             <div className="flex items-center gap-x-1">
               <div className="h-[2px] w-2 bg-blue-700" />
-              <span >
+              <span className="text-[13px]">
-                {stat} {toolTipData?.unit}
+                {metric} {toolTipData?.unit}
               </span>
             </div>
           </div>

ui/src/components/Header.tsx

@@ -103,7 +103,7 @@ export default function DashboardNavbar({
                     <hr className="h-[20px] w-px self-center border-none bg-slate-800/20 dark:bg-slate-300/20" />
                     <div className="relative inline-block text-left">
                       <Menu>
-                        <MenuButton className="h-full">
+                        <MenuButton as="div" className="h-full">
                           <Button className="flex h-full items-center gap-x-3 rounded-md border border-slate-800/20 bg-white px-2 py-1.5 dark:border-slate-600 dark:bg-slate-800 dark:text-white">
                             {picture ? (
                               <img

ui/src/components/KvmCard.tsx

@@ -100,15 +100,12 @@ export default function KvmCard({
             )}
           </div>
           <Menu as="div" className="relative inline-block text-left">
-            <div>
             <MenuButton
               as={Button}
               theme="light"
               TrailingIcon={LuEllipsisVertical}
               size="MD"
             ></MenuButton>
-            </div>
-
             <MenuItems
               transition
               className="data-closed:scale-95 data-closed:transform data-closed:opacity-0 data-enter:duration-100 data-leave:duration-75 data-enter:ease-out data-leave:ease-in"

ui/src/components/Metric.tsx

@@ -0,0 +1,180 @@
+/* eslint-disable react-refresh/only-export-components */
+import { ComponentProps } from "react";
+import { cva, cx } from "cva";
+
+import { someIterable } from "../utils";
+
+import { GridCard } from "./Card";
+import MetricsChart from "./MetricsChart";
+
+interface ChartPoint {
+  date: number;
+  metric: number | null;
+}
+
+interface MetricProps<T, K extends keyof T> {
+  title: string;
+  description: string;
+  stream?: Map<number, T>;
+  metric?: K;
+  data?: ChartPoint[];
+  gate?: Map<number, unknown>;
+  supported?: boolean;
+  map?: (p: { date: number; metric: number | null }) => ChartPoint;
+  domain?: [number, number];
+  unit: string;
+  heightClassName?: string;
+  referenceValue?: number;
+  badge?: ComponentProps<typeof MetricHeader>["badge"];
+  badgeTheme?: ComponentProps<typeof MetricHeader>["badgeTheme"];
+}
+
+/**
+ * Creates a chart array from a metrics map and a metric name.
+ *
+ * @param metrics - Expected to be ordered from oldest to newest.
+ * @param metricName - Name of the metric to create a chart array for.
+ */
+export function createChartArray<T, K extends keyof T>(
+  metrics: Map<number, T>,
+  metricName: K,
+) {
+  const result: { date: number; metric: number | null }[] = [];
+  const iter = metrics.entries();
+  let next = iter.next() as IteratorResult<[number, T]>;
+  const nowSeconds = Math.floor(Date.now() / 1000);
+
+  // We want 120 data points, in the chart.
+  const firstDate = Math.min(next.value?.[0] ?? nowSeconds, nowSeconds - 120);
+
+  for (let t = firstDate; t < nowSeconds; t++) {
+    while (!next.done && next.value[0] < t) next = iter.next();
+    const has = !next.done && next.value[0] === t;
+
+    let metric = null;
+    if (has) metric = next.value[1][metricName] as number;
+    result.push({ date: t, metric });
+
+    if (has) next = iter.next();
+  }
+
+  return result;
+}
+
+function computeReferenceValue(points: ChartPoint[]): number | undefined {
+  const values = points
+    .filter(p => p.metric != null && Number.isFinite(p.metric))
+    .map(p => Number(p.metric));
+
+  if (values.length === 0) return undefined;
+
+  const sum = values.reduce((acc, v) => acc + v, 0);
+  const mean = sum / values.length;
+  return Math.round(mean);
+}
+
+const theme = {
+  light:
+    "bg-white text-black border border-slate-800/20 dark:border dark:border-slate-700 dark:bg-slate-800 dark:text-slate-300",
+  danger: "bg-red-500 dark:border-red-700 dark:bg-red-800 dark:text-red-50",
+  primary: "bg-blue-500 dark:border-blue-700 dark:bg-blue-800 dark:text-blue-50",
+};
+
+interface SettingsItemProps {
+  readonly title: string;
+  readonly description: string | React.ReactNode;
+  readonly badge?: string;
+  readonly className?: string;
+  readonly children?: React.ReactNode;
+  readonly badgeTheme?: keyof typeof theme;
+}
+
+export function MetricHeader(props: SettingsItemProps) {
+  const { title, description, badge } = props;
+  const badgeVariants = cva({ variants: { theme: theme } });
+
+  return (
+    <div className="space-y-0.5">
+      <div className="flex items-center gap-x-2">
+        <div className="flex w-full items-center justify-between text-base font-semibold text-black dark:text-white">
+          {title}
+          {badge && (
+            <span
+              className={cx(
+                "ml-2 rounded-sm px-2 py-1 font-mono text-[10px] leading-none font-medium",
+                badgeVariants({ theme: props.badgeTheme ?? "light" }),
+              )}
+            >
+              {badge}
+            </span>
+          )}
+        </div>
+      </div>
+      <div className="text-sm text-slate-700 dark:text-slate-300">{description}</div>
+    </div>
+  );
+}
+
+export function Metric<T, K extends keyof T>({
+  title,
+  description,
+  stream,
+  metric,
+  data,
+  gate,
+  supported,
+  map,
+  domain = [0, 600],
+  unit = "",
+  heightClassName = "h-[127px]",
+  badge,
+  badgeTheme,
+}: MetricProps<T, K>) {
+  const ready = gate ? gate.size > 0 : stream ? stream.size > 0 : true;
+  const supportedFinal =
+    supported ??
+    (stream && metric ? someIterable(stream, ([, s]) => s[metric] !== undefined) : true);
+
+  // Either we let the consumer provide their own chartArray, or we create one from the stream and metric.
+  const raw = data ?? ((stream && metric && createChartArray(stream, metric)) || []);
+
+  // If the consumer provides a map function, we apply it to the raw data.
+  const dataFinal: ChartPoint[] = map ? raw.map(map) : raw;
+
+  // Compute the average value of the metric.
+  const referenceValue = computeReferenceValue(dataFinal);
+
+  return (
+    <div className="space-y-2">
+      <MetricHeader
+        title={title}
+        description={description}
+        badge={badge}
+        badgeTheme={badgeTheme}
+      />
+
+      <GridCard>
+        <div
+          className={`flex ${heightClassName} w-full items-center justify-center text-sm text-slate-500`}
+        >
+          {!ready ? (
+            <div className="flex flex-col items-center space-y-1">
+              <p className="text-slate-700">Waiting for data...</p>
+            </div>
+          ) : supportedFinal ? (
+            <MetricsChart
+              data={dataFinal}
+              domain={domain}
+              unit={unit}
+              referenceValue={referenceValue}
+            />
+          ) : (
+            <div className="flex flex-col items-center space-y-1">
+              <p className="text-black">Metric not supported</p>
+            </div>
+          )}
+        </div>
+      </GridCard>
+    </div>
+  );
+}

ui/src/components/MetricsChart.tsx

@@ -12,13 +12,13 @@ import {
 
 import CustomTooltip, { CustomTooltipProps } from "@components/CustomTooltip";
 
-export default function StatChart({
+export default function MetricsChart({
   data,
   domain,
   unit,
   referenceValue,
 }: {
-  data: { date: number; stat: number | null | undefined }[];
+  data: { date: number; metric: number | null | undefined }[];
   domain?: [string | number, string | number];
   unit?: string;
   referenceValue?: number;
@@ -33,7 +33,7 @@ export default function StatChart({
           strokeLinecap="butt"
           stroke="rgba(30, 41, 59, 0.1)"
         />
-        {referenceValue && (
+        {referenceValue !== undefined && (
           <ReferenceLine
             y={referenceValue}
             strokeDasharray="3 3"
@@ -64,7 +64,7 @@ export default function StatChart({
             .map(x => x.date)}
         />
         <YAxis
-          dataKey="stat"
+          dataKey="metric"
           axisLine={false}
           orientation="right"
           tick={{
@@ -73,6 +73,7 @@ export default function StatChart({
             fill: "rgba(107, 114, 128, 1)",
           }}
           padding={{ top: 0, bottom: 0 }}
+          allowDecimals
           tickLine={false}
           unit={unit}
           domain={domain || ["auto", "auto"]}
@@ -87,7 +88,7 @@ export default function StatChart({
         <Line
           type="monotone"
           isAnimationActive={false}
-          dataKey="stat"
+          dataKey="metric"
           stroke="rgb(29 78 216)"
           strokeLinecap="round"
           strokeWidth={2}

ui/src/components/WebRTCVideo.tsx

@@ -345,8 +345,13 @@ export default function WebRTCVideo({ microphone }: WebRTCVideoProps) {
 
       peerConnection.addEventListener(
         "track",
-        (e: RTCTrackEvent) => {
+        (_e: RTCTrackEvent) => {
-          addStreamToVideoElm(e.streams[0]);
+          // The combined MediaStream is now managed in the main component
+          // We'll use the mediaStream from the store instead of individual track streams
+          const { mediaStream } = useRTCStore.getState();
+          if (mediaStream) {
+            addStreamToVideoElm(mediaStream);
+          }
         },
         { signal },
       );

ui/src/components/sidebar/connectionStats.tsx

@@ -1,74 +1,40 @@
 import { useInterval } from "usehooks-ts";
 
 import SidebarHeader from "@/components/SidebarHeader";
-import { GridCard } from "@/components/Card";
 import { useRTCStore, useUiStore } from "@/hooks/stores";
-import StatChart from "@/components/StatChart";
+import { someIterable } from "@/utils";
 
-function createChartArray<T, K extends keyof T>(
+import { createChartArray, Metric } from "../Metric";
-  stream: Map<number, T>,
+import { SettingsSectionHeader } from "../SettingsSectionHeader";
-  metric: K,
-): { date: number; stat: T[K] | null }[] {
-  const stat = Array.from(stream).map(([key, stats]) => {
-    return { date: key, stat: stats[metric] };
-  });
-
-  // Sort the dates to ensure they are in chronological order
-  const sortedStat = stat.map(x => x.date).sort((a, b) => a - b);
-
-  // Determine the earliest statistic date
-  const earliestStat = sortedStat[0];
-
-  // Current time in seconds since the Unix epoch
-  const now = Math.floor(Date.now() / 1000);
-
-  // Determine the starting point for the chart data
-  const firstChartDate = earliestStat ? Math.min(earliestStat, now - 120) : now - 120;
-
-  // Generate the chart array for the range between 'firstChartDate' and 'now'
-  return Array.from({ length: now - firstChartDate }, (_, i) => {
-    const currentDate = firstChartDate + i;
-    return {
-      date: currentDate,
-      // Find the statistic for 'currentDate', or use the last known statistic if none exists for that date
-      stat: stat.find(x => x.date === currentDate)?.stat ?? null,
-    };
-  });
-}
 
 export default function ConnectionStatsSidebar() {
   const { sidebarView, setSidebarView } = useUiStore();
   const {
     mediaStream,
     peerConnection,
-     inboundRtpStats,
+    inboundRtpStats: inboundVideoRtpStats,
-     appendInboundRtpStats,
+    appendInboundRtpStats: appendInboundVideoRtpStats,
-     candidatePairStats,
+    candidatePairStats: iceCandidatePairStats,
     appendCandidatePairStats,
     appendLocalCandidateStats,
     appendRemoteCandidateStats,
     appendDiskDataChannelStats,
   } = useRTCStore();
 
-  function isMetricSupported<T, K extends keyof T>(
-    stream: Map<number, T>,
-    metric: K,
-  ): boolean {
-    return Array.from(stream).some(([, stat]) => stat[metric] !== undefined);
-  }
-
   useInterval(function collectWebRTCStats() {
     (async () => {
       if (!mediaStream) return;
+
       const videoTrack = mediaStream.getVideoTracks()[0];
       if (!videoTrack) return;
+
       const stats = await peerConnection?.getStats();
       let successfulLocalCandidateId: string | null = null;
       let successfulRemoteCandidateId: string | null = null;
 
       stats?.forEach(report => {
-        if (report.type === "inbound-rtp") {
+        if (report.type === "inbound-rtp" && report.kind === "video") {
-          appendInboundRtpStats(report);
+          appendInboundVideoRtpStats(report);
         } else if (report.type === "candidate-pair" && report.nominated) {
           if (report.state === "succeeded") {
             successfulLocalCandidateId = report.localCandidateId;
@@ -91,144 +57,133 @@ export default function ConnectionStatsSidebar() {
     })();
   }, 500);
 
+  const jitterBufferDelay = createChartArray(inboundVideoRtpStats, "jitterBufferDelay");
+  const jitterBufferEmittedCount = createChartArray(
+    inboundVideoRtpStats,
+    "jitterBufferEmittedCount",
+  );
+
+  const jitterBufferAvgDelayData = jitterBufferDelay.map((d, idx) => {
+    if (idx === 0) return { date: d.date, metric: null };
+    const prevDelay = jitterBufferDelay[idx - 1]?.metric as number | null | undefined;
+    const currDelay = d.metric as number | null | undefined;
+    const prevCountEmitted =
+      (jitterBufferEmittedCount[idx - 1]?.metric as number | null | undefined) ?? null;
+    const currCountEmitted =
+      (jitterBufferEmittedCount[idx]?.metric as number | null | undefined) ?? null;
+
+    if (
+      prevDelay == null ||
+      currDelay == null ||
+      prevCountEmitted == null ||
+      currCountEmitted == null
+    ) {
+      return { date: d.date, metric: null };
+    }
+
+    const deltaDelay = currDelay - prevDelay;
+    const deltaEmitted = currCountEmitted - prevCountEmitted;
+
+    // Guard counter resets or no emitted frames
+    if (deltaDelay < 0 || deltaEmitted <= 0) {
+      return { date: d.date, metric: null };
+    }
+
+    const valueMs = Math.round((deltaDelay / deltaEmitted) * 1000);
+    return { date: d.date, metric: valueMs };
+  });
+
   return (
     <div className="grid h-full grid-rows-(--grid-headerBody) shadow-xs">
       <SidebarHeader title="Connection Stats" setSidebarView={setSidebarView} />
       <div className="h-full space-y-4 overflow-y-scroll bg-white px-4 py-2 pb-8 dark:bg-slate-900">
         <div className="space-y-4">
-          {/*
-            The entire sidebar component is always rendered, with a display none when not visible
-            The charts below, need a height and width, otherwise they throw. So simply don't render them unless the thing is visible
-          */}
           {sidebarView === "connection-stats" && (
-            <div className="space-y-4">
+            <div className="space-y-8">
-              <div className="space-y-2">
+              {/* Connection Group */}
-                <div>
+              <div className="space-y-3">
-                  <h2 className="text-lg font-semibold text-black dark:text-white">
+                <SettingsSectionHeader
-                    Packets Lost
+                  title="Connection"
-                  </h2>
+                  description="The connection between the client and the JetKVM."
-                  <p className="text-sm text-slate-700 dark:text-slate-300">
-                    Number of data packets lost during transmission.
-                  </p>
-                </div>
-                <GridCard>
-                  <div className="flex h-[127px] w-full items-center justify-center text-sm text-slate-500">
-                    {inboundRtpStats.size === 0 ? (
-                      <div className="flex flex-col items-center space-y-1">
-                        <p className="text-slate-700">Waiting for data...</p>
-                      </div>
-                    ) : isMetricSupported(inboundRtpStats, "packetsLost") ? (
-                      <StatChart
-                        data={createChartArray(inboundRtpStats, "packetsLost")}
-                        domain={[0, 100]}
-                        unit=" packets"
                 />
-                    ) : (
+                <Metric
-                      <div className="flex flex-col items-center space-y-1">
+                  title="Round-Trip Time"
-                        <p className="text-black">Metric not supported</p>
+                  description="Round-trip time for the active ICE candidate pair between peers."
-                      </div>
+                  stream={iceCandidatePairStats}
-                    )}
+                  metric="currentRoundTripTime"
-                  </div>
+                  map={x => ({
-                </GridCard>
-              </div>
-              <div className="space-y-2">
-                <div>
-                  <h2 className="text-lg font-semibold text-black dark:text-white">
-                    Round-Trip Time
-                  </h2>
-                  <p className="text-sm text-slate-700 dark:text-slate-300">
-                    Time taken for data to travel from source to destination and back
-                  </p>
-                </div>
-                <GridCard>
-                  <div className="flex h-[127px] w-full items-center justify-center text-sm text-slate-500">
-                    {inboundRtpStats.size === 0 ? (
-                      <div className="flex flex-col items-center space-y-1">
-                        <p className="text-slate-700">Waiting for data...</p>
-                      </div>
-                    ) : isMetricSupported(candidatePairStats, "currentRoundTripTime") ? (
-                      <StatChart
-                        data={createChartArray(
-                          candidatePairStats,
-                          "currentRoundTripTime",
-                        ).map(x => {
-                          return {
                     date: x.date,
-                            stat: x.stat ? Math.round(x.stat * 1000) : null,
+                    metric: x.metric != null ? Math.round(x.metric * 1000) : null,
-                          };
                   })}
                   domain={[0, 600]}
                   unit=" ms"
                 />
-                    ) : (
-                      <div className="flex flex-col items-center space-y-1">
-                        <p className="text-black">Metric not supported</p>
               </div>
-                    )}
+
-                  </div>
+              {/* Video Group */}
-                </GridCard>
+              <div className="space-y-3">
-              </div>
+                <SettingsSectionHeader
-              <div className="space-y-2">
+                  title="Video"
-                <div>
+                  description="The video stream from the JetKVM to the client."
-                  <h2 className="text-lg font-semibold text-black dark:text-white">
+                />
-                    Jitter
+
-                  </h2>
+                {/* RTP Jitter */}
-                  <p className="text-sm text-slate-700 dark:text-slate-300">
+                <Metric
-                    Variation in packet delay, affecting video smoothness.{" "}
+                  title="Network Stability"
-                  </p>
+                  badge="Jitter"
-                </div>
+                  badgeTheme="light"
-                <GridCard>
+                  description="How steady the flow of inbound video packets is across the network."
-                  <div className="flex h-[127px] w-full items-center justify-center text-sm text-slate-500">
+                  stream={inboundVideoRtpStats}
-                    {inboundRtpStats.size === 0 ? (
+                  metric="jitter"
-                      <div className="flex flex-col items-center space-y-1">
+                  map={x => ({
-                        <p className="text-slate-700">Waiting for data...</p>
-                      </div>
-                    ) : (
-                      <StatChart
-                        data={createChartArray(inboundRtpStats, "jitter").map(x => {
-                          return {
                     date: x.date,
-                            stat: x.stat ? Math.round(x.stat * 1000) : null,
+                    metric: x.metric != null ? Math.round(x.metric * 1000) : null,
-                          };
                   })}
-                        domain={[0, 300]}
+                  domain={[0, 10]}
                   unit=" ms"
                 />
-                    )}
+
-                  </div>
+                {/* Playback Delay */}
-                </GridCard>
+                <Metric
-              </div>
+                  title="Playback Delay"
-              <div className="space-y-2">
+                  description="Delay added by the jitter buffer to smooth playback when frames arrive unevenly."
-                <div>
+                  badge="Jitter Buffer Avg. Delay"
-                  <h2 className="text-lg font-semibold text-black dark:text-white">
+                  badgeTheme="light"
-                    Frames per second
+                  data={jitterBufferAvgDelayData}
-                  </h2>
+                  gate={inboundVideoRtpStats}
-                  <p className="text-sm text-slate-700 dark:text-slate-300">
+                  supported={
-                    Number of video frames displayed per second.
+                    someIterable(
-                  </p>
+                      inboundVideoRtpStats,
-                </div>
+                      ([, x]) => x.jitterBufferDelay != null,
-                <GridCard>
+                    ) &&
-                  <div className="flex h-[127px] w-full items-center justify-center text-sm text-slate-500">
+                    someIterable(
-                    {inboundRtpStats.size === 0 ? (
+                      inboundVideoRtpStats,
-                      <div className="flex flex-col items-center space-y-1">
+                      ([, x]) => x.jitterBufferEmittedCount != null,
-                        <p className="text-slate-700">Waiting for data...</p>
+                    )
-                      </div>
+                  }
-                    ) : (
+                  domain={[0, 30]}
-                      <StatChart
+                  unit=" ms"
-                        data={createChartArray(inboundRtpStats, "framesPerSecond").map(
+                />
-                          x => {
+
-                            return {
+                {/* Packets Lost */}
-                              date: x.date,
+                <Metric
-                              stat: x.stat ? x.stat : null,
+                  title="Packets Lost"
-                            };
+                  description="Count of lost inbound video RTP packets."
-                          },
+                  stream={inboundVideoRtpStats}
-                        )}
+                  metric="packetsLost"
+                  domain={[0, 100]}
+                  unit=" packets"
+                />
+
+                {/* Frames Per Second */}
+                <Metric
+                  title="Frames per second"
+                  description="Number of inbound video frames displayed per second."
+                  stream={inboundVideoRtpStats}
+                  metric="framesPerSecond"
                   domain={[0, 80]}
                   unit=" fps"
                 />
-                    )}
-                  </div>
-                </GridCard>
               </div>
             </div>
           )}

ui/src/hooks/stores.ts

@@ -355,6 +355,10 @@ export interface SettingsState {
   setVideoBrightness: (value: number) => void;
   videoContrast: number;
   setVideoContrast: (value: number) => void;
+
+  // Microphone persistence settings
+  microphoneWasEnabled: boolean;
+  setMicrophoneWasEnabled: (enabled: boolean) => void;
 }
 
 export const useSettingsStore = create(
@@ -400,6 +404,10 @@ export const useSettingsStore = create(
       setVideoBrightness: (value: number) => set({ videoBrightness: value }),
       videoContrast: 1.0,
       setVideoContrast: (value: number) => set({ videoContrast: value }),
+
+      // Microphone persistence settings
+      microphoneWasEnabled: false,
+      setMicrophoneWasEnabled: (enabled: boolean) => set({ microphoneWasEnabled: enabled }),
     }),
     {
       name: "settings",

ui/src/hooks/useMicrophone.ts

@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useRef, useState } from "react";
 
-import { useRTCStore } from "@/hooks/stores";
+import { useRTCStore, useSettingsStore } from "@/hooks/stores";
 import api from "@/api";
 import { devLog, devInfo, devWarn, devError, devOnly } from "@/utils/debug";
 import { AUDIO_CONFIG } from "@/config/constants";
@@ -23,6 +23,8 @@ export function useMicrophone() {
     setMicrophoneMuted,
   } = useRTCStore();
 
+  const { microphoneWasEnabled, setMicrophoneWasEnabled } = useSettingsStore();
+
   const microphoneStreamRef = useRef<MediaStream | null>(null);
   
   // Loading states
@@ -61,7 +63,7 @@ export function useMicrophone() {
     // Cleaning up microphone stream
     
     if (microphoneStreamRef.current) {
-      microphoneStreamRef.current.getTracks().forEach(track => {
+      microphoneStreamRef.current.getTracks().forEach((track: MediaStreamTrack) => {
         track.stop();
       });
       microphoneStreamRef.current = null;
@@ -193,7 +195,7 @@ export function useMicrophone() {
         
         // Find the audio transceiver (should already exist with sendrecv direction)
         const transceivers = peerConnection.getTransceivers();
-        devLog("Available transceivers:", transceivers.map(t => ({
+        devLog("Available transceivers:", transceivers.map((t: RTCRtpTransceiver) => ({
           direction: t.direction,
           mid: t.mid,
           senderTrack: t.sender.track?.kind,
@@ -201,7 +203,7 @@ export function useMicrophone() {
         })));
         
         // Look for an audio transceiver that can send (has sendrecv or sendonly direction)
-        const audioTransceiver = transceivers.find(transceiver => {
+        const audioTransceiver = transceivers.find((transceiver: RTCRtpTransceiver) => {
           // Check if this transceiver is for audio and can send
           const canSend = transceiver.direction === 'sendrecv' || transceiver.direction === 'sendonly';
           
@@ -389,6 +391,9 @@ export function useMicrophone() {
       setMicrophoneActive(true);
       setMicrophoneMuted(false);
       
+      // Save microphone enabled state for auto-restore on page reload
+      setMicrophoneWasEnabled(true);
+      
       devLog("Microphone state set to active. Verifying state:", {
         streamInRef: !!microphoneStreamRef.current,
         streamInStore: !!microphoneStream,
@@ -447,7 +452,7 @@ export function useMicrophone() {
       setIsStarting(false);
       return { success: false, error: micError };
     }
-  }, [peerConnection, setMicrophoneStream, setMicrophoneSender, setMicrophoneActive, setMicrophoneMuted, stopMicrophoneStream, isMicrophoneActive, isMicrophoneMuted, microphoneStream, isStarting, isStopping, isToggling]);
+  }, [peerConnection, setMicrophoneStream, setMicrophoneSender, setMicrophoneActive, setMicrophoneMuted, setMicrophoneWasEnabled, stopMicrophoneStream, isMicrophoneActive, isMicrophoneMuted, microphoneStream, isStarting, isStopping, isToggling]);
 
 
 
@@ -476,6 +481,9 @@ export function useMicrophone() {
       setMicrophoneActive(false);
       setMicrophoneMuted(false);
       
+      // Save microphone disabled state for persistence
+      setMicrophoneWasEnabled(false);
+
       // Sync state after stopping to ensure consistency (with longer delay)
       setTimeout(() => syncMicrophoneState(), 500);
 
@@ -492,7 +500,7 @@ export function useMicrophone() {
         }
       };
     }
-  }, [stopMicrophoneStream, syncMicrophoneState, setMicrophoneActive, setMicrophoneMuted, isStarting, isStopping, isToggling]);
+  }, [stopMicrophoneStream, syncMicrophoneState, setMicrophoneActive, setMicrophoneMuted, setMicrophoneWasEnabled, isStarting, isStopping, isToggling]);
 
   // Toggle microphone mute
   const toggleMicrophoneMute = useCallback(async (): Promise<{ success: boolean; error?: MicrophoneError }> => {
@@ -560,7 +568,7 @@ export function useMicrophone() {
       const newMutedState = !isMicrophoneMuted;
       
       // Mute/unmute the audio track
-      audioTracks.forEach(track => {
+      audioTracks.forEach((track: MediaStreamTrack) => {
         track.enabled = !newMutedState;
         devLog(`Audio track ${track.id} enabled: ${track.enabled}`);
       });
@@ -607,10 +615,30 @@ export function useMicrophone() {
 
 
 
-  // Sync state on mount
+  // Sync state on mount and auto-restore microphone if it was enabled before page reload
   useEffect(() => {
-    syncMicrophoneState();
+    const autoRestoreMicrophone = async () => {
-  }, [syncMicrophoneState]);
+      // First sync the current state
+      await syncMicrophoneState();
+      
+      // If microphone was enabled before page reload and is not currently active, restore it
+      if (microphoneWasEnabled && !isMicrophoneActive && peerConnection) {
+        devLog("Auto-restoring microphone after page reload");
+        try {
+          const result = await startMicrophone();
+          if (result.success) {
+            devInfo("Microphone auto-restored successfully after page reload");
+          } else {
+            devWarn("Failed to auto-restore microphone:", result.error);
+          }
+        } catch (error) {
+          devWarn("Error during microphone auto-restoration:", error);
+        }
+      }
+    };
+    
+    autoRestoreMicrophone();
+  }, [syncMicrophoneState, microphoneWasEnabled, isMicrophoneActive, peerConnection, startMicrophone]);
 
   // Cleanup on unmount - use ref to avoid dependency on stopMicrophoneStream
   useEffect(() => {
@@ -619,7 +647,7 @@ export function useMicrophone() {
       const stream = microphoneStreamRef.current;
       if (stream) {
         devLog("Cleanup: stopping microphone stream on unmount");
-        stream.getAudioTracks().forEach(track => {
+        stream.getAudioTracks().forEach((track: MediaStreamTrack) => {
           track.stop();
           devLog(`Cleanup: stopped audio track ${track.id}`);
         });

ui/src/main.tsx

@@ -116,6 +116,7 @@ if (isOnDevice) {
       path: "/",
       errorElement: <ErrorBoundary />,
       element: <DeviceRoute />,
+      HydrateFallback: () => <div className="p-4">Loading...</div>,
       loader: DeviceRoute.loader,
       children: [
         {

ui/src/routes/devices.$id.mount.tsx

@@ -355,7 +355,7 @@ function UrlView({
   const popularImages = [
     {
       name: "Ubuntu 24.04 LTS",
-      url: "https://releases.ubuntu.com/24.04.2/ubuntu-24.04.2-desktop-amd64.iso",
+      url: "https://releases.ubuntu.com/24.04.3/ubuntu-24.04.3-desktop-amd64.iso",
       icon: UbuntuIcon,
     },
     {
@@ -369,8 +369,8 @@ function UrlView({
       icon: DebianIcon,
     },
     {
-      name: "Fedora 41",
+      name: "Fedora 42",
-      url: "https://download.fedoraproject.org/pub/fedora/linux/releases/41/Workstation/x86_64/iso/Fedora-Workstation-Live-x86_64-41-1.4.iso",
+      url: "https://download.fedoraproject.org/pub/fedora/linux/releases/42/Workstation/x86_64/iso/Fedora-Workstation-Live-42-1.1.x86_64.iso",
       icon: FedoraIcon,
     },
     {
@@ -385,7 +385,7 @@ function UrlView({
     },
     {
       name: "Arch Linux",
-      url: "https://archlinux.doridian.net/iso/2025.02.01/archlinux-2025.02.01-x86_64.iso",
+      url: "https://archlinux.doridian.net/iso/latest/archlinux-x86_64.iso",
       icon: ArchIcon,
     },
     {

ui/src/routes/devices.$id.settings.video.tsx

@@ -1,15 +1,16 @@
-import { useState, useEffect } from "react";
+import { useEffect, useState } from "react";
 
 import { Button } from "@/components/Button";
 import { TextAreaWithLabel } from "@/components/TextArea";
 import { JsonRpcResponse, useJsonRpc } from "@/hooks/useJsonRpc";
 import { SettingsPageHeader } from "@components/SettingsPageheader";
 import { useSettingsStore } from "@/hooks/stores";
-
+import { SelectMenuBasic } from "@components/SelectMenuBasic";
-import notifications from "../notifications";
+import Fieldset from "@components/Fieldset";
-import { SelectMenuBasic } from "../components/SelectMenuBasic";
+import notifications from "@/notifications";
 
 import { SettingsItem } from "./devices.$id.settings";
+
 const defaultEdid =
   "00ffffffffffff0052620188008888881c150103800000780a0dc9a05747982712484c00000001010101010101010101010101010101023a801871382d40582c4500c48e2100001e011d007251d01e206e285500c48e2100001e000000fc00543734392d6648443732300a20000000fd00147801ff1d000a202020202020017b";
 const edids = [
@@ -50,21 +51,27 @@ export default function SettingsVideoRoute() {
   const [streamQuality, setStreamQuality] = useState("1");
   const [customEdidValue, setCustomEdidValue] = useState<string | null>(null);
   const [edid, setEdid] = useState<string | null>(null);
+  const [edidLoading, setEdidLoading] = useState(false);
 
   // Video enhancement settings from store
   const {
-    videoSaturation, setVideoSaturation,
+    videoSaturation,
-    videoBrightness, setVideoBrightness,
+    setVideoSaturation,
-    videoContrast, setVideoContrast
+    videoBrightness,
+    setVideoBrightness,
+    videoContrast,
+    setVideoContrast,
   } = useSettingsStore();
 
   useEffect(() => {
+    setEdidLoading(true);
     send("getStreamQualityFactor", {}, (resp: JsonRpcResponse) => {
       if ("error" in resp) return;
       setStreamQuality(String(resp.result));
     });
 
     send("getEDID", {}, (resp: JsonRpcResponse) => {
+      setEdidLoading(false);
       if ("error" in resp) {
         notifications.error(`Failed to get EDID: ${resp.error.data || "Unknown error"}`);
         return;
@@ -89,7 +96,10 @@ export default function SettingsVideoRoute() {
   }, [send]);
 
   const handleStreamQualityChange = (factor: string) => {
-    send("setStreamQualityFactor", { factor: Number(factor) }, (resp: JsonRpcResponse) => {
+    send(
+      "setStreamQualityFactor",
+      { factor: Number(factor) },
+      (resp: JsonRpcResponse) => {
         if ("error" in resp) {
           notifications.error(
             `Failed to set stream quality: ${resp.error.data || "Unknown error"}`,
@@ -97,20 +107,25 @@ export default function SettingsVideoRoute() {
           return;
         }
 
-      notifications.success(`Stream quality set to ${streamQualityOptions.find(x => x.value === factor)?.label}`);
+        notifications.success(
+          `Stream quality set to ${streamQualityOptions.find(x => x.value === factor)?.label}`,
+        );
         setStreamQuality(factor);
-    });
+      },
+    );
   };
 
   const handleEDIDChange = (newEdid: string) => {
+    setEdidLoading(true);
     send("setEDID", { edid: newEdid }, (resp: JsonRpcResponse) => {
+      setEdidLoading(false);
       if ("error" in resp) {
         notifications.error(`Failed to set EDID: ${resp.error.data || "Unknown error"}`);
         return;
       }
 
       notifications.success(
-        `EDID set successfully to ${edids.find(x => x.value === newEdid)?.label}`,
+        `EDID set successfully to ${edids.find(x => x.value === newEdid)?.label ?? "the custom EDID"}`,
       );
       // Update the EDID value in the UI
       setEdid(newEdid);
@@ -158,7 +173,7 @@ export default function SettingsVideoRoute() {
                   step="0.1"
                   value={videoSaturation}
                   onChange={e => setVideoSaturation(parseFloat(e.target.value))}
-                  className="w-32 h-2 bg-gray-200 rounded-lg appearance-none cursor-pointer dark:bg-gray-700"
+                  className="h-2 w-32 cursor-pointer appearance-none rounded-lg bg-gray-200 dark:bg-gray-700"
                 />
               </SettingsItem>
 
@@ -173,7 +188,7 @@ export default function SettingsVideoRoute() {
                   step="0.1"
                   value={videoBrightness}
                   onChange={e => setVideoBrightness(parseFloat(e.target.value))}
-                  className="w-32 h-2 bg-gray-200 rounded-lg appearance-none cursor-pointer dark:bg-gray-700"
+                  className="h-2 w-32 cursor-pointer appearance-none rounded-lg bg-gray-200 dark:bg-gray-700"
                 />
               </SettingsItem>
 
@@ -188,7 +203,7 @@ export default function SettingsVideoRoute() {
                   step="0.1"
                   value={videoContrast}
                   onChange={e => setVideoContrast(parseFloat(e.target.value))}
-                  className="w-32 h-2 bg-gray-200 rounded-lg appearance-none cursor-pointer dark:bg-gray-700"
+                  className="h-2 w-32 cursor-pointer appearance-none rounded-lg bg-gray-200 dark:bg-gray-700"
                 />
               </SettingsItem>
 
@@ -205,10 +220,11 @@ export default function SettingsVideoRoute() {
                 />
               </div>
             </div>
-
+            <Fieldset disabled={edidLoading} className="space-y-2">
               <SettingsItem
                 title="EDID"
                 description="Adjust the EDID settings for the display"
+                loading={edidLoading}
               >
                 <SelectMenuBasic
                   size="SM"
@@ -245,12 +261,14 @@ export default function SettingsVideoRoute() {
                       size="SM"
                       theme="primary"
                       text="Set Custom EDID"
+                      loading={edidLoading}
                       onClick={() => handleEDIDChange(customEdidValue)}
                     />
                     <Button
                       size="SM"
                       theme="light"
                       text="Restore to default"
+                      loading={edidLoading}
                       onClick={() => {
                         setCustomEdidValue(null);
                         handleEDIDChange(defaultEdid);
@@ -259,6 +277,7 @@ export default function SettingsVideoRoute() {
                   </div>
                 </>
               )}
+            </Fieldset>
           </div>
         </div>
       </div>

ui/src/routes/devices.$id.tsx

@@ -54,6 +54,7 @@ import { useDeviceUiNavigation } from "@/hooks/useAppNavigation";
 import { FeatureFlagProvider } from "@/providers/FeatureFlagProvider";
 import { DeviceStatus } from "@routes/welcome-local";
 import { SystemVersionInfo } from "@routes/devices.$id.settings.general.update";
+import audioQualityService from "@/services/audioQualityService";
 
 interface LocalLoaderResp {
   authMode: "password" | "noPassword" | null;
@@ -474,8 +475,27 @@ export default function KvmIdRoute() {
       }
     };
 
-    pc.ontrack = function (event) {
+    pc.ontrack = function (event: RTCTrackEvent) {
-      setMediaStream(event.streams[0]);
+      // Handle separate MediaStreams for audio and video tracks
+      const track = event.track;
+      const streams = event.streams;
+      
+      if (streams && streams.length > 0) {
+        // Get existing MediaStream or create a new one
+        const existingStream = useRTCStore.getState().mediaStream;
+        let combinedStream: MediaStream;
+        
+        if (existingStream) {
+          combinedStream = existingStream;
+          // Add the new track to the existing stream
+          combinedStream.addTrack(track);
+        } else {
+          // Create a new MediaStream with the track
+          combinedStream = new MediaStream([track]);
+        }
+        
+        setMediaStream(combinedStream);
+      }
     };
 
     setTransceiver(pc.addTransceiver("video", { direction: "recvonly" }));
@@ -533,6 +553,11 @@ export default function KvmIdRoute() {
     };
   }, [clearCandidatePairStats, clearInboundRtpStats, setPeerConnection, setSidebarView]);
 
+  // Register callback with audioQualityService
+  useEffect(() => {
+    audioQualityService.setReconnectionCallback(setupPeerConnection);
+  }, [setupPeerConnection]);
+
   // TURN server usage detection
   useEffect(() => {
     if (peerConnectionState !== "connected") return;

ui/src/services/audioQualityService.ts

@@ -24,6 +24,7 @@ class AudioQualityService {
     2: 'High',
     3: 'Ultra'
   };
+  private reconnectionCallback: (() => Promise<void>) | null = null;
 
   /**
    * Fetch audio quality presets from the backend
@@ -96,12 +97,34 @@ class AudioQualityService {
   }
 
   /**
-   * Set audio quality
+   * Set reconnection callback for WebRTC reset
+   */
+  setReconnectionCallback(callback: () => Promise<void>): void {
+    this.reconnectionCallback = callback;
+  }
+
+  /**
+   * Trigger audio track replacement using backend's track replacement mechanism
+   */
+  private async replaceAudioTrack(): Promise<void> {
+    if (this.reconnectionCallback) {
+      await this.reconnectionCallback();
+    }
+  }
+
+  /**
+   * Set audio quality with track replacement
    */
   async setAudioQuality(quality: number): Promise<boolean> {
     try {
       const response = await api.POST('/audio/quality', { quality });
-      return response.ok;
+      
+      if (!response.ok) {
+        return false;
+      }
+      
+      await this.replaceAudioTrack();
+      return true;
     } catch (error) {
       console.error('Failed to set audio quality:', error);
       return false;

ui/src/utils.ts

@@ -94,6 +94,17 @@ export const formatters = {
   },
 };
 
+export function someIterable<T>(
+  iterable: Iterable<T>,
+  predicate: (item: T) => boolean,
+): boolean {
+  for (const item of iterable) {
+    if (predicate(item)) return true;
+  }
+
+  return false;
+}
+
 export const VIDEO = new Blob(
   [
     new Uint8Array([

webrtc.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/base64"
 	"encoding/json"
+	"fmt"
 	"net"
 	"runtime"
 	"strings"
@@ -24,6 +25,7 @@ type Session struct {
 	peerConnection           *webrtc.PeerConnection
 	VideoTrack               *webrtc.TrackLocalStaticSample
 	AudioTrack               *webrtc.TrackLocalStaticSample
+	AudioRtpSender           *webrtc.RTPSender
 	ControlChannel           *webrtc.DataChannel
 	RPCChannel               *webrtc.DataChannel
 	HidChannel               *webrtc.DataChannel
@@ -231,22 +233,21 @@ func newSession(config SessionConfig) (*Session, error) {
 		}
 	})
 
-	session.VideoTrack, err = webrtc.NewTrackLocalStaticSample(webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeH264}, "video", "kvm")
+	session.VideoTrack, err = webrtc.NewTrackLocalStaticSample(webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeH264}, "video", "kvm-video")
 	if err != nil {
 		scopedLogger.Warn().Err(err).Msg("Failed to create VideoTrack")
 		return nil, err
 	}
 
-	session.AudioTrack, err = webrtc.NewTrackLocalStaticSample(webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeOpus}, "audio", "kvm")
+	session.AudioTrack, err = webrtc.NewTrackLocalStaticSample(webrtc.RTPCodecCapability{MimeType: webrtc.MimeTypeOpus}, "audio", "kvm-audio")
 	if err != nil {
 		scopedLogger.Warn().Err(err).Msg("Failed to add VideoTrack to PeerConnection")
 		return nil, err
 	}
 
-	// Update the audio relay with the new WebRTC audio track
+	// Update the audio relay with the new WebRTC audio track asynchronously
-	if err := audio.UpdateAudioRelayTrack(session.AudioTrack); err != nil {
+	// This prevents blocking during session creation and avoids mutex deadlocks
-		scopedLogger.Warn().Err(err).Msg("Failed to update audio relay track")
+	audio.UpdateAudioRelayTrackAsync(session.AudioTrack)
-	}
 
 	videoRtpSender, err := peerConnection.AddTrack(session.VideoTrack)
 	if err != nil {
@@ -261,6 +262,7 @@ func newSession(config SessionConfig) (*Session, error) {
 		return nil, err
 	}
 	audioRtpSender := audioTransceiver.Sender()
+	session.AudioRtpSender = audioRtpSender
 
 	// Handle incoming audio track (microphone from browser)
 	peerConnection.OnTrack(func(track *webrtc.TrackRemote, receiver *webrtc.RTPReceiver) {
@@ -410,6 +412,22 @@ func (s *Session) stopAudioProcessor() {
 	s.audioWg.Wait()
 }
 
+// ReplaceAudioTrack replaces the current audio track with a new one
+func (s *Session) ReplaceAudioTrack(newTrack *webrtc.TrackLocalStaticSample) error {
+	if s.AudioRtpSender == nil {
+		return fmt.Errorf("audio RTP sender not available")
+	}
+
+	// Replace the track using the RTP sender
+	if err := s.AudioRtpSender.ReplaceTrack(newTrack); err != nil {
+		return fmt.Errorf("failed to replace audio track: %w", err)
+	}
+
+	// Update the session's audio track reference
+	s.AudioTrack = newTrack
+	return nil
+}
+
 func drainRtpSender(rtpSender *webrtc.RTPSender) {
 	// Lock to OS thread to isolate RTCP processing
 	runtime.LockOSThread()