public void Show_Precision_Histogram(PrecisionCase precisionCase)
{
PosixProcessPriority.ApplyMyPriority(precisionCase.Priority);
var preJit = CpuLoader.Run(11, 1, true).IncrementsCount;
Console.WriteLine($"OS: {CrossFullInfo.OsDisplayName}");
Console.WriteLine($"CPU: {CrossFullInfo.ProcessorName}");
var actualCase = new PrecisionCase(Process.GetCurrentProcess().PriorityClass, precisionCase.IncludeKernelLoad);
Console.WriteLine($"Granularity[{actualCase}] (it may vary if Intel SpeedStep, TurboBoost, etc are active):");
int count = CrossFullInfo.IsMono ? 1 : 9;
for (int i = 1; i <= count; i++)
{
var cpuLoadResult = CpuLoader.Run(minDuration: 1000, needKernelLoad: precisionCase.IncludeKernelLoad);
long granularity = cpuLoadResult.IncrementsCount;
double microSeconds = 1000000d / granularity;
Console.WriteLine($" #{i}: {granularity} increments a second, eg {microSeconds:n1} microseconds in average");
// Percentile report
PercentileCalc <long> percentileCalc = new PercentileCalc <long>(cpuLoadResult.Population, x => x, x => x.ToString("n3"));
double[] percents = new[] { 1d, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 99 };
// double[] percents = new[] {1d, 5, 10, 90, 95, 99}.Reverse().ToArray();
StringBuilder pcReport = new StringBuilder();
for (int p = 0; p < percents.Length; p++)
{
pcReport.Append($" {percents[p].ToString("f0").PadLeft(3)}%: {percentileCalc[percents[p]].ToString("n3"),-12}");
if ((p + 1) % 5 == 0)
{
pcReport.AppendLine();
}
}
Console.WriteLine(pcReport);
// Histogram report
Statistica <long> stat = new Statistica <long>(cpuLoadResult.Population, x => (double)x, x => x, x => x.ToString("n3"));
var histogram = stat.BuildReport(12, 3);
Console.WriteLine(histogram.ToConsole("CPU Usage increments (microseconds)", 42));
}
}
