protected virtual void InitializePerformanceCounters()
{
try
{
_memoryCategory = new PerformanceCounterCategory(MemoryCategoryName);
var instanceName = GetInstanceName();
_fullInstanceName = instanceName.Item2;
_instanceName = instanceName.Item1;
_gen0Size = new PerformanceCounterWrapper(MemoryCategoryName, "Gen 0 heap size", _instanceName);
_gen1Size = new PerformanceCounterWrapper(MemoryCategoryName, "Gen 1 heap size", _instanceName);
_gen2Size = new PerformanceCounterWrapper(MemoryCategoryName, "Gen 2 heap size", _instanceName);
_lohSize = new PerformanceCounterWrapper(MemoryCategoryName, "Large Object Heap size", _instanceName);
_contentionCount = new PerformanceCounterWrapper(ThreadingCategoryName, "Total # of Contentions", _instanceName);
}
catch (UnauthorizedAccessException ex) when(ex.Message.Contains("'Global'"))
{
// Catching error UnauthorizedAccessException: Access to the registry key 'Global' is denied.
// The 'Global' part seems consistent across localizations
Log.Error(ex, "The process does not have sufficient permissions to read performance counters. Please refer to https://dtdg.co/net-runtime-metrics to learn how to grant those permissions.");
throw;
}
catch (Exception ex)
{
Log.Error(ex, "An error occured while initializing the performance counters");
throw;
}
}
private void InitializePerformanceCounters(string instanceName)
{
_gen0Size = new PerformanceCounterWrapper(MemoryCategoryName, "Gen 0 heap size", instanceName);
_gen1Size = new PerformanceCounterWrapper(MemoryCategoryName, "Gen 1 heap size", instanceName);
_gen2Size = new PerformanceCounterWrapper(MemoryCategoryName, "Gen 2 heap size", instanceName);
_lohSize = new PerformanceCounterWrapper(MemoryCategoryName, "Large Object Heap size", instanceName);
_contentionCount = new PerformanceCounterWrapper(ThreadingCategoryName, "Total # of Contentions", instanceName);
}
private void TryUpdateGauge(string path, PerformanceCounterWrapper counter)
{
var value = counter.GetValue(_instanceName);
if (value != null)
{
_statsd.Gauge(path, value);
}
}
private void TryUpdateCounter(string path, PerformanceCounterWrapper counter, ref long?lastValue)
{
var value = counter.GetValue(_instanceName);
if (value == null)
{
return;
}
if (lastValue == null)
{
lastValue = value;
return;
}
_statsd.Counter(path, value - lastValue);
lastValue = value;
}