EgorBot for EgorBo in #107437

EgorBot commented 2 months ago

Processing https://github.com/dotnet/runtime/pull/107437#issuecomment-2332930480 command:

Command

-arm64 -intel ```cs using BenchmarkDotNet.Attributes; using System; using System.Runtime.CompilerServices; public class Proga { static object[] test1 = [null, null, null]; static object[] test2 = [null, null, null]; static object val = null; [Benchmark] public void StelemRef() { test1[0] = val; test1[1] = val; test1[2] = val; } [Benchmark] public void BulkCopy_heap() { test1.AsSpan().CopyTo(test2); } [Benchmark] public void BulkCopy_stack() { MyStruct ms = default; Copy(ref ms, default); } [MethodImpl(MethodImplOptions.NoInlining)] static void Copy(ref MyStruct dst, MyStruct src) => dst = src; public record struct MyStruct(object o1, object o2, object o3, object o4); } ```

(EgorBot will reply in this issue)

EgorBot commented 2 months ago

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-VMAGSR : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-CTTJLC : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	Mean	Error	Ratio
StelemRef	Main	5.237 ns	0.0007 ns	1.00
StelemRef	PR	5.302 ns	0.0005 ns	1.01

BulkCopy_heap	Main	8.147 ns	0.0233 ns	1.00
BulkCopy_heap	PR	8.170 ns	0.0310 ns	1.00

BulkCopy_stack	Main	8.439 ns	0.0109 ns	1.00
BulkCopy_stack	PR	8.578 ns	0.0201 ns	1.02

BDN_Artifacts.zip

EgorBot commented 2 months ago

cc @EgorBo (logs)

EgorBo commented 2 months ago

@EgorBot -arm64 -pr 107437

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

public class Proga
{
    static object[] test1 = [null, null, null];
    static object[] test2 = [null, null, null];
    static object val = null;

    [Benchmark]
    public void StelemRef()
    {
        test1[0] = val;
        test1[1] = val;
        test1[2] = val;
    }

    [Benchmark]
    public void BulkCopy_heap()
    {
        test1.AsSpan().CopyTo(test2);
    }

    [Benchmark]
    public void BulkCopy_stack()
    {
        MyStruct ms = default;
        Copy(ref ms, default);
    }

    [MethodImpl(MethodImplOptions.NoInlining)]
    static void Copy(ref MyStruct dst, MyStruct src) => dst = src;

    public record struct MyStruct(object o1, object o2, object o3, object o4);
}

EgorBot / runtime-utils