public SystemStatsHelper(ILogger log, ICheckpoint writerCheckpoint)
{
Ensure.NotNull(log, "log");
Ensure.NotNull(writerCheckpoint, "writerCheckpoint");
_log = log;
_writerCheckpoint = writerCheckpoint;
_perfCounter = new PerfCounterHelper(_log);
}
private void GetPerfCounterInformation(Dictionary<string, object> stats, int count)
{
if (_giveup)
return;
var process = Process.GetCurrentProcess();
try
{
stats["proc-startTime"] = process.StartTime.ToUniversalTime().ToString("O");
stats["proc-id"] = process.Id;
stats["proc-mem"] = new StatMetadata(process.WorkingSet64, "Process", "Process Virtual Memory");
stats["proc-cpu"] = new StatMetadata(_perfCounter.GetProcCpuUsage(), "Process", "Process Cpu Usage");
stats["proc-threadsCount"] = _perfCounter.GetProcThreadsCount();
stats["proc-contentionsRate"] = _perfCounter.GetContentionsRateCount();
stats["proc-thrownExceptionsRate"] = _perfCounter.GetThrownExceptionsRate();
stats["sys-cpu"] = _perfCounter.GetTotalCpuUsage();
stats["sys-freeMem"] = GetFreeMem();
}
catch (InvalidOperationException)
{
_log.Info("Received error reading counters. Attempting to rebuild.");
_perfCounter = new PerfCounterHelper(_log);
_giveup = count > 10;
if (_giveup)
_log.Error("Maximum rebuild attempts reached. Giving up on rebuilds.");
else
GetPerfCounterInformation(stats, count + 1);
}
}
