private void UpdateAggregations(LimitingResource limitingResource)
{
lock (m_lock)
{
int time = (int)(DateTime.UtcNow - m_lastSnapshotUtc).TotalMilliseconds;
m_lastSnapshotUtc = DateTime.UtcNow;
switch (limitingResource)
{
case LimitingResource.GraphShape:
m_blockedOnGraphMs += time;
break;
case LimitingResource.CPU:
m_blockedOnCpuMs += time;
break;
case LimitingResource.Disk:
m_blockedOnDiskMs += time;
break;
case LimitingResource.Memory:
m_blockedOnMemoryMs += time;
break;
case LimitingResource.ProjectedMemory:
m_blockedOnProjectedMemoryMs += time;
break;
case LimitingResource.Semaphore:
m_blockedOnSemaphoreMs += time;
break;
case LimitingResource.ConcurrencyLimit:
m_blockedOnPipSynchronization += time;
break;
case LimitingResource.UnavailableSlots:
m_blockedOnUnavailableSlotsMs += time;
break;
case LimitingResource.Other:
m_blockedOnUnknownMs += time;
break;
default:
Contract.Assert(false, "Unexpected LimitingResource:" + limitingResource.ToString());
throw new NotImplementedException("Unexpected Limiting Resource:" + limitingResource.ToString());
}
}
}
/// <summary>
/// Updates the limiting resource based on observed state
/// </summary>
/// <param name="aggregator">Performance Aggregator</param>
/// <param name="readyProcessPips">Process pips whose graph dependencies have been satisfied but are not currently executing</param>
/// <param name="executinProcessPips">Number of process pips that are currently executing</param>
/// <param name="lastLimitingResource">The most recent limiting worker resource</param>
internal LimitingResource OnPerfSample(PerformanceCollector.Aggregator aggregator, long readyProcessPips, long executinProcessPips, WorkerResource?lastLimitingResource)
{
if (m_lastSnapshotUtc == DateTime.MinValue)
{
// We don't have a window, so don't collect this sample and just remember when the next window starts
m_lastSnapshotUtc = DateTime.UtcNow;
return(LimitingResource.Other);
}
LimitingResource limitingResource = DetermineLimitingResource(aggregator, readyProcessPips, executinProcessPips, lastLimitingResource);
UpdateAggregations(limitingResource);
return(limitingResource);
}