public void Run()
{
var duration = Duration.TotalSeconds;
var threadCount = ParallelRunner.ThreadCount;
using (Writer.Section($"Test settings:")) {
Writer.AppendMetric("Duration", duration * 1000, "ms");
Writer.AppendMetric("Thread count", threadCount, "");
Writer.AppendMetric("Unit size", UnitAllocator.UnitSize, "B");
}
Writer.AppendLine();
var totalCount = 0L;
for (var pass = 0; pass < PassCount; pass++)
{
var runner = ParallelRunner.New(i => new UnitAllocator(Duration));
var allocators = runner.Run();
totalCount = Math.Max(totalCount, allocators.Sum(a => a.AllocationCount));
}
var totalSize = totalCount * UnitAllocator.UnitSize;
var totalSizeWithOverhead = totalCount * (UnitAllocator.UnitSize + GarbageAllocator.ObjectSize);
using (Writer.Section($"Allocation speed:")) {
Writer.AppendMetric("Operations per second", totalCount / Sizes.Mega / duration, "M/s");
// Writer.AppendMetric("Bytes per second", totalSize / duration / Sizes.GB, "GB/s");
// Writer.AppendMetric("Bytes per second (incl. overhead)", totalSizeWithOverhead / duration / Sizes.GB, "GB/s");
}
Writer.AppendLine();
}
public static void AppendHistogram(this IndentedTextWriter writer,
string title, double[] data, string unit,
string format = "0.####",
double[] percentiles = null)
{
percentiles = percentiles ?? DefaultPercentiles;
IndentedTextWriter AppendLine(string s) => writer.AppendLine(s);
IndentedTextWriter AppendMetric(string name, double value) => writer.AppendMetric(name, value, unit);
using (writer.Section($"{title}")) {
if (data.Length == 0)
{
AppendLine("No data.");
return;
}
AppendLine("Min .. Max:");
using (writer.Indent()) {
AppendMetric("Min", data.Min());
AppendMetric("Avg", data.Average());
AppendMetric("Max", data.Max());
}
if (percentiles.Length > 0)
{
AppendLine("Percentiles:");
using (writer.Indent()) {
var maxIndex = data.Length - 1;
foreach (var p in percentiles)
{
AppendMetric($"{p:#.##}%", data[(int)(maxIndex * p / 100)]);
}
}
}
}
}
public void Run(Options options)
{
// Applying options
if (!string.IsNullOrEmpty(options.GCLatencyMode))
{
GCSettings.LatencyMode = Enum.Parse <GCLatencyMode>(options.GCLatencyMode);
}
if (options.Duration.HasValue)
{
BurnTester.DefaultDuration = TimeSpan.FromSeconds(options.Duration.Value);
}
BurnTester.DefaultMaxSize = ArgumentHelper.ParseRelativeValue(
options.MaxSize, BurnTester.DefaultMaxSize, true);
ParallelRunner.ThreadCount = (int)ArgumentHelper.ParseRelativeValue(
options.ThreadCount, ParallelRunner.ThreadCount, true);
var tests = options.Tests?.ToLowerInvariant() ?? "";
var ramSizeGb = HardwareInfo.GetRamSize() ?? 4;
var staticSetSizeGb = 0;
if (!string.IsNullOrEmpty(options.StaticSetSize))
{
tests += "b";
staticSetSizeGb = (int)ArgumentHelper.ParseRelativeValue(options.StaticSetSize, ramSizeGb, true);
}
var outputMode = options.OutputMode ?? "f";
if (outputMode == "f")
{
// Dumping environment info
Writer.AppendValue("Launch parameters", string.Join(" ", Environment.GetCommandLineArgs().Skip(1)));
using (Writer.Section("Software:")) {
Writer.AppendValue("Runtime", ".NET Core");
using (Writer.Indent()) {
Writer.AppendValue("Version", RuntimeInformation.FrameworkDescription);
Writer.AppendValue("GC mode", GCInfo.GetGCMode());
}
Writer.AppendValue("OS",
$"{RuntimeInformation.OSDescription.Trim()} ({RuntimeInformation.OSArchitecture})");
}
using (Writer.Section("Hardware:")) {
var coreCountAddon = ParallelRunner.ThreadCount != Environment.ProcessorCount
? $", {ParallelRunner.ThreadCount} used by test"
: "";
Writer.AppendValue("CPU", HardwareInfo.GetCpuModelName());
Writer.AppendValue("CPU core count", $"{Environment.ProcessorCount}{coreCountAddon}");
Writer.AppendValue("RAM size", $"{ramSizeGb:N0} GB");
}
Writer.AppendLine();
}
RunWarmup();
if (tests == "")
{
RunSpeedTest();
RunBurnTest("--- Stateless server (no static set) ---", 0);
RunBurnTest("--- Worker / typical server (static set = 20% RAM) ---", (long)(ramSizeGb * Sizes.GB / 5));
RunBurnTest("--- Caching / compute server (static set = 50% RAM) ---", (long)(ramSizeGb * Sizes.GB / 2));
return;
}
if (tests.Contains("a"))
{
RunSpeedTest();
}
if (tests.Contains("b"))
{
var title = $"--- Static set = {staticSetSizeGb} GB ({staticSetSizeGb * 100.0 / ramSizeGb:0.##} % RAM) ---";
RunBurnTest(title, (long)(staticSetSizeGb * Sizes.GB));
}
}
