Benchmarks for #116453 (AndyAyersMS)

[EgorBot]

Processing dotnet/runtime#116453 (comment) command:

Command

-intel -arm64 --envvars DOTNET_JitDisasm:GenericEquals

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

public class StringComparisons
{
    private string s1 = "test string 1";
    private string s2 = "test string 2";

    [Benchmark]
    public bool Equals_inline() => string.Equals(s1, s2);

    [Benchmark]
    public bool Equals_specialized() => EqualityComparer<string>.Default.Equals(s1, s2);

    [Benchmark]
    public bool Equals_generic() => GenericEquals(s1, s2);

    [MethodImpl(MethodImplOptions.NoInlining)]
    private static bool GenericEquals<T>(T a, T b) => EqualityComparer<T>.Default.Equals(a, b);
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on linux_azure_cobalt100

BenchmarkDotNet v0.14.0, Ubuntu 24.04.2 LTS (Noble Numbat)
azure_cobalt100
  Job-YXDMTN : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-EIUSZP : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
EnvironmentVariables=DOTNET_JitDisasm=GenericEquals

Method	Toolchain	Mean	Error	Ratio
Equals_inline	Main	1.022 ns	0.0008 ns	1.00
Equals_inline	PR	1.072 ns	0.0006 ns	1.05
Equals_specialized	Main	1.599 ns	0.0036 ns	1.00
Equals_specialized	PR	1.132 ns	0.0050 ns	0.71
Equals_generic	Main	3.955 ns	0.0016 ns	1.00
Equals_generic	PR	3.987 ns	0.0009 ns	1.01

BDN_Artifacts.zip

cc @AndyAyersMS (agent_logs.txt). EgorBot manual: link.

[EgorBot]

Benchmark results on linux_azure_cascadelake

BenchmarkDotNet v0.14.0, Ubuntu 24.04.2 LTS (Noble Numbat)
Intel Xeon Platinum 8370C CPU 2.80GHz, 1 CPU, 8 logical and 4 physical cores
  Job-KMLGCN : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  Job-RJCLIR : .NET 10.0.0 (42.42.42.42424), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
EnvironmentVariables=DOTNET_JitDisasm=GenericEquals

Method	Toolchain	Mean	Error	Ratio
Equals_inline	Main	2.158 ns	0.0018 ns	1.00
Equals_inline	PR	2.218 ns	0.0031 ns	1.03
Equals_specialized	Main	1.893 ns	0.0010 ns	1.00
Equals_specialized	PR	2.141 ns	0.0268 ns	1.13
Equals_generic	Main	4.337 ns	0.0128 ns	1.00
Equals_generic	PR	4.364 ns	0.0065 ns	1.01

BDN_Artifacts.zip

cc @AndyAyersMS (agent_logs.txt). EgorBot manual: link.