Tame down encoding performance alerts. Closes #338

core/ffmpeg/fileWriterReceiverService.go

@@ -89,7 +89,7 @@ func (s *FileWriterReceiverService) fileWritten(path string) {
 		utils.StartPerformanceMonitor(performanceMonitorKey)
 		s.callbacks.SegmentWritten(path)
 
-		if averagePerformance != 0 && averagePerformance > float64(config.Config.GetVideoSegmentSecondsLength()) {
+		if averagePerformance != 0 && averagePerformance > float64(config.Config.GetVideoSegmentSecondsLength())*1.1 {
 			if !_inWarningState {
 				log.Warnln("slow encoding for variant", index, "if this continues you may see buffering or errors. troubleshoot this issue by visiting https://owncast.online/docs/troubleshooting/")
 				_inWarningState = true

core/stats.go

@@ -48,7 +48,7 @@ func IsStreamConnected() bool {
 	// Kind of a hack.  It takes a handful of seconds between a RTMP connection and when HLS data is available.
 	// So account for that with an artificial buffer of four segments.
 	timeSinceLastConnected := time.Since(_stats.LastConnectTime.Time).Seconds()
-	if timeSinceLastConnected < float64(config.Config.GetVideoSegmentSecondsLength())*2.0 {
+	if timeSinceLastConnected < float64(config.Config.GetVideoSegmentSecondsLength())*2.3 {
 		return false
 	}
 

utils/performanceTimer.go

@@ -13,8 +13,8 @@ var _durationStorage = make(map[string][]float64)
 
 // StartPerformanceMonitor will keep track of the start time of this event.
 func StartPerformanceMonitor(key string) {
-	if len(_durationStorage[key]) > 30 {
-		_durationStorage[key] = removeHighAndLow(_durationStorage[key])
+	if len(_durationStorage[key]) > 20 {
+		_durationStorage[key] = removeHighValue(_durationStorage[key])
 	}
 	_pointsInTime[key] = time.Now()
 }
@@ -28,16 +28,16 @@ func GetAveragePerformance(key string) float64 {
 
 	delta := time.Since(timestamp).Seconds()
 	_durationStorage[key] = append(_durationStorage[key], delta)
-	if len(_durationStorage[key]) < 10 {
+	if len(_durationStorage[key]) < 8 {
 		return 0
 	}
-	_durationStorage[key] = removeHighAndLow(_durationStorage[key])
+	_durationStorage[key] = removeHighValue(_durationStorage[key])
 	return avg(_durationStorage[key])
 }
 
-func removeHighAndLow(values []float64) []float64 {
+func removeHighValue(values []float64) []float64 {
 	sort.Float64s(values)
-	return values[1 : len(values)-1]
+	return values[:len(values)-1]
 }
 
 func avg(values []float64) float64 {