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EgorBot for EgorBo in #9 #13

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EgorBot opened this issue Sep 1, 2024 · 2 comments
Open

EgorBot for EgorBo in #9 #13

EgorBot opened this issue Sep 1, 2024 · 2 comments

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@EgorBot
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EgorBot commented Sep 1, 2024

Processing #9 (comment):


-intel -perf -pr 107218

using System;
using System.Runtime.CompilerServices;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

BenchmarkRunner.Run<Bench>(args: args);

public class Bench
{
    [Benchmark]
    public void Foo()
    {
        for (int i = 0; i < 1000; i++)
            Work<char>(1);
    }

    [MethodImpl(MethodImplOptions.NoInlining)]
    static void Work<T>(int size) => GC.KeepAlive(GC.AllocateUninitializedArray<T>(size));
}
@EgorBot
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EgorBot commented Sep 1, 2024

Benchmark results on Intel

BenchmarkDotNet v0.14.0, Ubuntu 22.04.4 LTS (Jammy Jellyfish)
Intel Xeon Platinum 8370C CPU 2.80GHz, 1 CPU, 16 logical and 8 physical cores
  Job-KRJIIQ : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-JFKCIX : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
Method Toolchain Mean Error Ratio
Foo Main 8.923 μs 0.0754 μs 1.00
Foo PR 12.720 μs 0.0547 μs 1.43

BDN_Artifacts.zip

🔥 Flame graphs: Main
vs PR

Hot asm: Main vs PR
Hot functions: Main vs PR

For clean perf results, make sure you have just one [Benchmark] in your app.

@EgorBot
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EgorBot commented Sep 1, 2024

Build log

cc @EgorBo

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