Benchmarks for #111586 (jkotas)

[EgorBot]

Processing dotnet/runtime#111586 (comment) command:

Command

-arm

using System;
using System.Collections.Generic;
using System.Linq;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

namespace BenchmarkGround
{
    public class Bench
    {
        public IEnumerable<object[]> Args =>
            [
                ["Foo", "FooBar"],
                ["Foo", "Bar"],
                ["A quick brown fox jumps over a lazy dog", "A quick brown fox jumps over a lazy hog"],
                [new string([.. Enumerable.Repeat('a', 1000), '1']), new string([.. Enumerable.Repeat('a', 1000), '2'])],
            ];

        [Benchmark]
        [ArgumentsSource(nameof(Args))]
        public int Compare(string left, string right) => string.Compare(left, right, StringComparison.Ordinal);

        [Benchmark]
        [ArgumentsSource(nameof(Args))]
        public int CompareOridinal(string left, string right) => string.CompareOrdinal(left, right);
    }
}

(EgorBot will reply in this issue)

[EgorBot]

Benchmark results on linux_azure_cobalt100

BenchmarkDotNet v0.15.0, Linux Ubuntu 24.04.3 LTS (Noble Numbat)
Neoverse-N2, 8 physical cores
  Job-YHPTFV : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD
  Job-PZRFFT : .NET 10.0.0 (42.42.42.42424), Arm64 RyuJIT AdvSIMD

Method	Toolchain	left	right	Mean	Error	Ratio
Compare	Main	A qui(...)y dog [39]	A qui(...)y hog [39]	4.1553 ns	0.0030 ns	1.00
Compare	PR	A qui(...)y dog [39]	A qui(...)y hog [39]	3.9077 ns	0.0016 ns	0.94
CompareOridinal	Main	A qui(...)y dog [39]	A qui(...)y hog [39]	4.0744 ns	0.0031 ns	1.00
CompareOridinal	PR	A qui(...)y dog [39]	A qui(...)y hog [39]	3.9433 ns	0.0029 ns	0.97
Compare	Main	aaaa(...)aaa1 [1001]	aaaa(...)aaa2 [1001]	65.1061 ns	0.0924 ns	1.00
Compare	PR	aaaa(...)aaa1 [1001]	aaaa(...)aaa2 [1001]	70.4580 ns	0.0376 ns	1.08
CompareOridinal	Main	aaaa(...)aaa1 [1001]	aaaa(...)aaa2 [1001]	64.9302 ns	0.0606 ns	1.00
CompareOridinal	PR	aaaa(...)aaa1 [1001]	aaaa(...)aaa2 [1001]	70.6849 ns	0.0514 ns	1.09
Compare	Main	Foo	Bar	0.0196 ns	0.0025 ns	1.01
Compare	PR	Foo	Bar	0.0238 ns	0.0020 ns	1.23
CompareOridinal	Main	Foo	Bar	0.0000 ns	0.0000 ns	?
CompareOridinal	PR	Foo	Bar	0.0031 ns	0.0026 ns	?
Compare	Main	Foo	FooBar	1.3182 ns	0.0035 ns	1.00
Compare	PR	Foo	FooBar	0.9431 ns	0.0018 ns	0.72
CompareOridinal	Main	Foo	FooBar	1.3490 ns	0.0039 ns	1.00
CompareOridinal	PR	Foo	FooBar	0.9921 ns	0.0017 ns	0.74

Artifacts.zip

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