/// <summary>
/// Warmup phase
/// </summary>
private void WarmUp()
{
Trace.Debug($"Beginning Warmups for {BenchmarkName}");
var warmupStopWatch = new Stopwatch();
var targetTime = Settings.RunTime;
Contract.Assert(targetTime != TimeSpan.Zero);
var runCount = 0L;
var runTime = 0L;
/* Pre-Warmup */
Trace.Debug("----- BEGIN PRE-WARMUP -----");
/* Estimate */
Allocate(); // allocate all collectors needed
PreRun();
try
{
if (Settings.RunMode == RunMode.Throughput)
{
Trace.Debug(
$"Throughput mode: estimating how many invocations of {BenchmarkName} will take {targetTime.TotalSeconds}s");
var estimateCount = 3;
var runEstimates = new long[estimateCount];
var timeEstimates = new long[estimateCount];
for (var i = 0; i <= estimateCount; i++)
{
warmupStopWatch.Start();
while (warmupStopWatch.ElapsedTicks < targetTime.Ticks)
{
Invoker.InvokeRun(_currentRun.Context);
runCount++;
}
warmupStopWatch.Stop();
if (i > 0)
{
runEstimates[i - 1] = runCount;
timeEstimates[i - 1] = warmupStopWatch.ElapsedTicks;
}
runCount = 0;
warmupStopWatch.Reset();
}
runCount = (long)Math.Ceiling(runEstimates.Average());
runTime = (long)Math.Ceiling(timeEstimates.Average());
Trace.Debug(
$"Throughput mode: executed {runCount} instances of {BenchmarkName} in roughly {targetTime.TotalSeconds}s. Using that figure for benchmark.");
}
else
{
warmupStopWatch.Start();
Invoker.InvokeRun(_currentRun.Context);
runCount++;
warmupStopWatch.Stop();
// elapsed time
runTime = warmupStopWatch.ElapsedTicks;
}
}
catch (Exception ex)
{
HandleBenchmarkRunException(ex, $"Error occurred during ${BenchmarkName} RUN.");
}
PostRun();
Complete(true);
// check to see if pre-warmup threw an exception
var faulted = _currentRun.IsFaulted;
if (faulted)
{
Trace.Error($"Error occurred during pre-warmup. Exiting and producing dump...");
/*
* Normally we don't ever queue up the warmup into the final stats, but we do it
* in failure cases so we can capture the exception thrown during warmup into
* the final report we're going to deliver to the end-user.
*/
CompletedRuns.Enqueue(_currentRun.ToReport(TimeSpan.Zero));
return;
}
Trace.Debug("----- END PRE-WARMUP -----");
WarmupData = new WarmupData(runTime, runCount);
if (!Settings.SkipWarmups)
{
Trace.Debug("----- BEGIN WARMUPS -----");
var i = _warmupCount;
/* Warmup to force CPU caching */
while (i > 0 && !_currentRun.IsFaulted)
{
RunSingleBenchmark();
i--;
}
Trace.Debug("----- END WARMUPS -----");
}
else
{
Trace.Debug("----- SKIPPING WARMUPS -----");
}
}
/// <summary>
/// Warmup phase
/// </summary>
private void WarmUp()
{
var warmupStopWatch = new Stopwatch();
var targetTime = Settings.RunTime;
Contract.Assert(targetTime != TimeSpan.Zero);
var runCount = 0L;
/* Pre-Warmup */
RunSingleBenchmark();
// check to see if pre-warmup threw an exception
var faulted = _currentRun.IsFaulted;
if (faulted)
{
/*
* Normally we don't ever queue up the warmup into the final stats, but we do it
* in failure cases so we can capture the exception thrown during warmup into
* the final report we're going to deliver to the end-user.
*/
CompletedRuns.Enqueue(_currentRun.ToReport(TimeSpan.Zero));
return;
}
/* Esimate */
Allocate(); // allocate all collectors needed
PreRun();
if (Settings.RunMode == RunMode.Throughput)
{
warmupStopWatch.Start();
while (warmupStopWatch.ElapsedTicks < targetTime.Ticks)
{
Invoker.InvokeRun(_currentRun.Context);
runCount++;
}
warmupStopWatch.Stop();
}
else
{
warmupStopWatch.Start();
Invoker.InvokeRun(_currentRun.Context);
runCount++;
warmupStopWatch.Stop();
}
PostRun();
Complete();
// elapsed time
var runTime = warmupStopWatch.ElapsedTicks;
WarmupData = new WarmupData(runTime, runCount);
var i = WarmupCount;
/* Warmup to force CPU caching */
while (i > 0 && !_currentRun.IsFaulted)
{
RunSingleBenchmark();
i--;
}
}