private async Task ReportObservedTPSAsync()
{
_lastReportTime = DateTime.Now;
// Write TPS periodically
while (_enabled)
{
try
{
// Wait for start of next interval
await Task.Delay(GetMillisecondsToStartOfNextInterval());
// Note info for current interval, resetting interval aggretation data members
DateTime currentTimeSnapshot = DateTime.Now;
var recentLatencyTimes = Interlocked.Exchange(ref _intervalLatencyTimes, new ConcurrentDictionary <int, int>());
var recentTotalRequestCharge = Interlocked.Exchange(ref _totalRequestCharge, 0.0);
// Calculate one second interval metrics
IntervalMetrics m = InitPerSecondIntervalMetric(currentTimeSnapshot, currentTimeSnapshot - _lastReportTime, recentLatencyTimes, recentTotalRequestCharge);
PopulateExtendedMetrics?.Invoke(m);
PerSecondMetricsAvailable?.Invoke(m);
// Update one minute interval metrics & post if needed
UpdatePerMinuteIntervalMetrics(m);
// Remember this interval
_lastReportTime = currentTimeSnapshot;
await Task.Delay(10); // Don't run too fast & report more than once per interval
}
catch (Exception x)
{
Tracer.TraceWarning("Ignoring exception on background metrics reporting thread. Exception = {0}", x.ToString());
}
}
}
private async Task ReportObservedTpsAsync(CancellationToken cancellationToken)
{
_lastReportTime = DateTime.Now;
// Write TPS periodically
while (true)
{
// Bail if cancelled
cancellationToken.ThrowIfCancellationRequested();
try
{
// Wait for start of next interval
await Task.Delay(GetMillisecondsToStartOfNextInterval(), cancellationToken);
// Bail if cancelled
cancellationToken.ThrowIfCancellationRequested();
// Note info for current interval, resetting interval aggretation data members
DateTime currentTimeSnapshot = DateTime.Now;
var recentLatencyTimes = Interlocked.Exchange(ref _intervalLatencyTimes,
new ConcurrentDictionary <int, int>());
var recentCpuPercentageReported = Interlocked.Exchange(ref _totalCpuPercentageReported, 0.0);
// Calculate one second interval metrics
IntervalMetrics m = InitPerSecondIntervalMetric(currentTimeSnapshot,
currentTimeSnapshot - _lastReportTime, recentLatencyTimes, recentCpuPercentageReported);
PopulateExtendedMetrics?.Invoke(m);
PerSecondMetricsAvailable?.Invoke(m);
// Update one minute interval metrics & post if needed
UpdatePerMinuteIntervalMetrics(m);
// Remember this interval
_lastReportTime = currentTimeSnapshot;
// Don't run too fast & report more than once per interval
await Task.Delay(10, cancellationToken);
}
catch (OperationCanceledException)
{
// Don't throw exception when cancelled, just exit silently
break;
}
catch (Exception x)
{
Tracer.TraceWarning($"Ignoring exception on background metrics reporting thread. Exception = {x.ToString()}");
}
}
}
