.NET 8 v .NET 9 LINQ benchmarks

dotnet9LinqBenchmarks.cs

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Columns;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Environments;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Reports;

namespace Benchmarks
{
    [Config(typeof(Config))]
    [HideColumns(Column.Job, Column.RatioSD, Column.AllocRatio)]
    [MemoryDiagnoser]
    public class Linq
    {
        [Params(50)]
        public int Length { get; set; }

        private IEnumerable<int> _source, _sourceToCompare;

        [GlobalSetup]
        public void Setup()
        {
            _source = Enumerable.Range(1, Length).ToArray();
            _sourceToCompare = Enumerable.Range(1, Length).ToArray();
        }

        [Benchmark]
        public int Min() => _source.Min();

        [Benchmark]
        public int Max() => _source.Max();

        [Benchmark]
        public int Count() => _source.Count();

        [Benchmark]
        public int ElementAt() => _source.ElementAt(5);

        [Benchmark]
        public bool SequenceEqual() => 
            _source.SequenceEqual(_sourceToCompare);

        private class Config : ManualConfig
        {
            public Config()
            {
                AddJob(Job.Default.WithId(".NET 8").WithRuntime(CoreRuntime.Core80).AsBaseline());
                AddJob(Job.Default.WithId(".NET 9").WithRuntime(CoreRuntime.Core90));

                SummaryStyle =
                    SummaryStyle.Default.WithRatioStyle(RatioStyle.Percentage);
            }
        }
    }
}