EgorBot for EgorBo in #109014

[EgorBot]

Processing dotnet/runtime#109014 (comment) command:

Command

-intel -arm64 -profiler -nonativepgo

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

BenchmarkSwitcher.FromAssembly(typeof(Bench).Assembly).Run(args);

[GcServer(true)]
public class Bench
{
    static object[] Src0 = Enumerable.Range(0, 2).Select(i => (object)i).ToArray();
    static object[] Src1 = Enumerable.Range(0, 10).Select(i => (object)i).ToArray();
    static object[] Src2 = Enumerable.Range(0, 128).Select(i => (object)i).ToArray();
    static object[] Dst = new object[128];

    [Benchmark]public void CopyObjects2() => Src0.AsSpan().CopyTo(Dst);
    [Benchmark]public void CopyObjects10() => Src1.AsSpan().CopyTo(Dst);
    [Benchmark]public void CopyObjects128() => Src2.AsSpan().CopyTo(Dst);
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on Arm64

BenchmarkDotNet v0.14.0, Ubuntu 24.04 LTS (Noble Numbat)
Arm64
  Job-RXNURD : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-OIFMBI : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
Server=True

Method	Toolchain	Mean	Error	Ratio
CopyObjects2	Main	7.424 ns	0.0008 ns	1.00
CopyObjects2	PR	6.943 ns	0.0003 ns	0.94
CopyObjects10	Main	11.247 ns	0.0027 ns	1.00
CopyObjects10	PR	7.467 ns	0.0055 ns	0.66
CopyObjects128	Main	22.994 ns	0.0063 ns	1.00
CopyObjects128	PR	22.394 ns	0.0063 ns	0.97

BDN_Artifacts.zip

Profile for Bench_CopyObjects128:

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

Profile for Bench_CopyObjects2:

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

Profile for Bench_CopyObjects10:

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

[EgorBot]

cc @EgorBo (logs)

[EgorBot]

Benchmark results on Intel

BenchmarkDotNet v0.14.0, Ubuntu 24.04 LTS (Noble Numbat)
Intel Xeon Platinum 8488C, 1 CPU, 16 logical and 8 physical cores
  Job-MFQLBF : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-XHXEZY : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
Server=True

Method	Toolchain	Mean	Error	Ratio
CopyObjects2	Main	7.904 ns	0.1906 ns	1.00
CopyObjects2	PR	7.819 ns	0.1203 ns	0.99
CopyObjects10	Main	8.886 ns	0.1173 ns	1.00
CopyObjects10	PR	8.803 ns	0.2013 ns	0.99
CopyObjects128	Main	18.716 ns	0.2499 ns	1.00
CopyObjects128	PR	16.769 ns	0.2169 ns	0.90

BDN_Artifacts.zip

Profile for Bench_CopyObjects128:

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

Profile for Bench_CopyObjects2:

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

Profile for Bench_CopyObjects10:

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

[EgorBot]

cc @EgorBo (logs)