in core/src/main/scala/org/apache/spark/eventhubs/PartitionsStatusTracker.scala [399:406]
def updatePerformancePercentage(averageTimePerEvent: Double, standardDeviation: Double): Unit = {
val averagePlusStdDev: Double = averageTimePerEvent + standardDeviation
if (!emptyBatch && hasBeenUpdated) {
if (timePerEventInMillis > averagePlusStdDev) {
performancePercentage = averageTimePerEvent / timePerEventInMillis
}
}
}