Lingen Benchmarking (needs Performance Testing package)

MaxForLoopJob.cs

using Unity.Burst;
using Unity.Collections;
using Unity.Jobs;

namespace Tests
{
[BurstCompile(CompileSynchronously = true, FloatMode = FloatMode.Fast, OptimizeFor = OptimizeFor.Performance,
	DisableSafetyChecks = true)]
public struct MaxForLoopJob : IJob
{
	[ReadOnly]
	public NativeArray<int> input;

	[WriteOnly]
	public NativeReference<int> output;

	public void Execute()
	{
		var max = int.MinValue;
		var length = input.Length;

		for (int i = 0; i < length; ++i)
		{
			if (input[i] > max)
			{
				max = input[i];
			}
		}

		output.Value = max;
	}
}
}

MaxLinqGenJob.cs

using Cathei.LinqGen;
using Unity.Burst;
using Unity.Collections;
using Unity.Jobs;

namespace Tests
{
[BurstCompile(CompileSynchronously = true, FloatMode = FloatMode.Fast, OptimizeFor = OptimizeFor.Performance,
	DisableSafetyChecks = true)]
public struct MaxLinqGenJob : IJob
{
	[ReadOnly]
	public NativeArray<int> input;

	[WriteOnly]
	public NativeReference<int> output;

	public void Execute()
	{
		var list = new NativeList<int>();
		list.Gen().Max();

		var fs = new FixedList128Bytes<int>();
		fs.Gen().Max();

		output.Value = input.Gen().Max();
	}
}
}

PerfComparison.cs

using System.Diagnostics.CodeAnalysis;
using NUnit.Framework;
using Tests;
using Unity.Collections;
using Unity.Jobs;
using Unity.PerformanceTesting;

// ReSharper disable once CheckNamespace
[SuppressMessage("ReSharper", "AccessToDisposedClosure")]
public class PerfComparison
{
	private readonly SampleGroup sampleGroup = new("µs", SampleUnit.Microsecond);
	private const int ITERATIONS = 10;
	private const int ARRAY_SIZE = 10000;
	private const int WARMUP = 50;
	private const int MEASURE = 10000;

	[Test, Performance]
	public void SquareAndSumLinqGen()
	{
		using var input = GetTestData(Allocator.TempJob, ARRAY_SIZE);
		using var output = new NativeReference<int>(Allocator.TempJob);

		Measure.Method(() =>
			{
				new SquareAndSumLinqGenJob
				{
					input = input,
					output = output,
				}.Run();
			}).
			WarmupCount(WARMUP).
			MeasurementCount(MEASURE).
			IterationsPerMeasurement(ITERATIONS).
			SampleGroup(sampleGroup).
			Run();
	}

	[Test, Performance]
	public void SquareAndSumForLoop()
	{
		using var input = GetTestData(Allocator.TempJob, ARRAY_SIZE);
		using var output = new NativeReference<int>(Allocator.TempJob);

		Measure.Method(() =>
			{
				new SquareAndSumForLoopJob
				{
					input = input,
					output = output,
				}.Run();
			}).
			WarmupCount(WARMUP).
			MeasurementCount(MEASURE).
			IterationsPerMeasurement(ITERATIONS).
			SampleGroup(sampleGroup).
			Run();
	}

	[Test, Performance]
	public void MaxForLoop()
	{
		using var input = GetTestData(Allocator.TempJob, ARRAY_SIZE);
		using var output = new NativeReference<int>(Allocator.TempJob);

		Measure.Method(() =>
			{
				new MaxForLoopJob
				{
					input = input,
					output = output,
				}.Run();
			}).
			WarmupCount(WARMUP).
			MeasurementCount(MEASURE).
			IterationsPerMeasurement(ITERATIONS).
			SampleGroup(sampleGroup).
			Run();
	}

	[Test, Performance]
	public void MaxLinqGen()
	{
		using var input = GetTestData(Allocator.TempJob, ARRAY_SIZE);
		using var output = new NativeReference<int>(Allocator.TempJob);

		Measure.Method(() =>
			{
				new MaxLinqGenJob
				{
					input = input,
					output = output,
				}.Run();
			}).
			WarmupCount(WARMUP).
			MeasurementCount(MEASURE).
			IterationsPerMeasurement(ITERATIONS).
			SampleGroup(sampleGroup).
			Run();
	}

	private NativeArray<int> GetTestData(Allocator allocator, int count)
	{
		var array = new NativeArray<int>(count, allocator);
		for (int i = 0; i < count; i++)
		{
			array[i] = i;
		}
		return array;
	}
}

SquareAndSumForLoopJob.cs

using Unity.Burst;
using Unity.Collections;
using Unity.Jobs;

namespace Tests
{
[BurstCompile(CompileSynchronously = true, FloatMode = FloatMode.Fast, OptimizeFor = OptimizeFor.Performance,
	DisableSafetyChecks = true)]
public struct SquareAndSumForLoopJob : IJob
{
	[ReadOnly]
	public NativeArray<int> input;

	[WriteOnly]
	public NativeReference<int> output;

	public void Execute()
	{
		var sum = 0;
		foreach (var i in input)
		{
			sum += i * 10;
		}

		output.Value = sum;
	}
}
}

SquareAndSumLinqGenJob.cs

using Cathei.LinqGen;
using Unity.Burst;
using Unity.Collections;
using Unity.Jobs;

namespace Tests
{
[BurstCompile(CompileSynchronously = true, FloatMode = FloatMode.Fast, OptimizeFor = OptimizeFor.Performance,
	DisableSafetyChecks = true)]
public struct SquareAndSumLinqGenJob : IJob
{
	[ReadOnly]
	public NativeArray<int> input;

	[WriteOnly]
	public NativeReference<int> output;

	public void Execute()
	{
		output.Value = input.Gen().Select(new Selector()).Sum();
	}
}

public struct Selector : IStructFunction<int, int>
{
	public int Invoke(int arg) => arg * 10;
}
}