forked from mirror/DotRecast
71 lines
2.9 KiB
C#
71 lines
2.9 KiB
C#
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using System;
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using System.Runtime.CompilerServices;
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using BenchmarkDotNet.Attributes;
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using BenchmarkDotNet.Engines;
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namespace DotRecast.Benchmark.Benchmarks;
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/*
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| Method | TestArraySize | Mean | Error | StdDev | Median |
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|------------------------------- |-------------- |-------------:|-----------:|------------:|-------------:|
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| Stackalloc_Long | 16 | 3.016 ns | 0.0179 ns | 0.0149 ns | 3.017 ns |
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| Stackalloc_Long_SkipLocalsInit | 16 | 2.265 ns | 0.0197 ns | 0.0184 ns | 2.258 ns |
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| New_Long | 16 | 5.917 ns | 0.1964 ns | 0.5634 ns | 5.761 ns |
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| New_Long_SkipLocalsInit | 16 | 5.703 ns | 0.1371 ns | 0.3935 ns | 5.661 ns |
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| Stackalloc_Long | 256 | 39.418 ns | 0.2737 ns | 0.2285 ns | 39.410 ns |
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| Stackalloc_Long_SkipLocalsInit | 256 | 2.274 ns | 0.0147 ns | 0.0131 ns | 2.274 ns |
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| New_Long | 256 | 53.901 ns | 2.9999 ns | 8.4614 ns | 51.449 ns |
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| New_Long_SkipLocalsInit | 256 | 53.480 ns | 1.8716 ns | 5.4298 ns | 51.858 ns |
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| Stackalloc_Long | 1024 | 137.037 ns | 0.3652 ns | 0.3416 ns | 137.031 ns |
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| Stackalloc_Long_SkipLocalsInit | 1024 | 3.669 ns | 0.0254 ns | 0.0226 ns | 3.668 ns |
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| New_Long | 1024 | 197.324 ns | 9.2795 ns | 27.0687 ns | 186.588 ns |
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| New_Long_SkipLocalsInit | 1024 | 210.996 ns | 10.0255 ns | 27.9471 ns | 206.110 ns |
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| Stackalloc_Long | 8192 | 1,897.989 ns | 7.1814 ns | 5.9968 ns | 1,897.814 ns |
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| Stackalloc_Long_SkipLocalsInit | 8192 | 20.598 ns | 0.2645 ns | 0.2344 ns | 20.572 ns |
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| New_Long | 8192 | 1,324.061 ns | 39.8447 ns | 116.2288 ns | 1,298.794 ns |
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| New_Long_SkipLocalsInit | 8192 | 1,305.211 ns | 35.1855 ns | 102.0796 ns | 1,295.539 ns |
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*/
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public class StackallocBenchmarks
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{
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private readonly Consumer _consumer = new();
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[Params(1 << 4, 1 << 8, 1 << 10, 1 << 13)]
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public int HashTableSize;
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[Benchmark]
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public void Stackalloc_Long()
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{
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Span<long> hashTable = stackalloc long[HashTableSize];
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_consumer.Consume(hashTable[0]);
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}
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[Benchmark]
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[SkipLocalsInit]
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public void Stackalloc_Long_SkipLocalsInit()
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{
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Span<long> hashTable = stackalloc long[HashTableSize];
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_consumer.Consume(hashTable[0]);
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}
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[Benchmark]
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public void New_Long()
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{
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Span<long> hashTable = new long[HashTableSize];
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_consumer.Consume(hashTable[0]);
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}
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[Benchmark]
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[SkipLocalsInit]
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public void New_Long_SkipLocalsInit()
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{
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Span<long> hashTable = new long[HashTableSize];
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_consumer.Consume(hashTable[0]);
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}
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}
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