EgorBot for AaronRobinsonMSFT in #107218

[EgorBot]

Processing dotnet/runtime#107218 (comment) command:

Command

-intel -arm64 -perf

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 will reply in this issue)

[EgorBot]

Benchmark results on Intel

BenchmarkDotNet v0.14.0, Ubuntu 22.04.4 LTS (Jammy Jellyfish)
Intel Xeon Platinum 8370C CPU 2.80GHz, 1 CPU, 8 logical and 4 physical cores
  Job-QZYBNP : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-BSZHLM : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Toolchain	Mean	Error	Ratio
Foo	Main	9.324 μs	0.1835 μs	1.00
Foo	PR	8.896 μs	0.1191 μs	0.95

BDN_Artifacts.zip

Flame graphs: Main vs PR 🔥
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

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

[EgorBot]

cc @AaronRobinsonMSFT (logs)

[EgorBot]

Benchmark results on Ampere

BenchmarkDotNet v0.14.0, Ubuntu 22.04.4 LTS (Jammy Jellyfish)
Ampere
  Job-NAIHYY : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-XKUARV : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
RatioSD=0.02

Method	Toolchain	Mean	Error	Ratio
Foo	Main	9.827 μs	0.1672 μs	1.00
Foo	PR	9.251 μs	0.1111 μs	0.94

BDN_Artifacts.zip

Flame graphs: Main vs PR 🔥
Hot asm: Main vs PR
Hot functions: Main vs PR
Counters: Main vs PR

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

[EgorBot]

cc @AaronRobinsonMSFT (logs)

[EgorBo]

Looks like I broke profiler mode in my recent updates to the bot 😐