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Add new perf benchmark for generic dictionary expansion #836

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Nov 8, 2019
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Add new perf benchmark for generic dictionary expansion #836

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02ecbd8
Add new perf benchmark for generic dictionary expansion
Aug 29, 2019
a63bcc3
CR feedback
Nov 7, 2019
87ad39a
Remove unused iteration counter
Nov 7, 2019
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158 changes: 158 additions & 0 deletions src/benchmarks/micro/coreclr/perflab/DictinoaryExpansion.cs
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// Copyright (c) Microsoft. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using System;
using System.Runtime.CompilerServices;
using System.Collections.Generic;
using BenchmarkDotNet.Attributes;
using MicroBenchmarks;

namespace PerfLabTests
{
public class GenClass<T>
{
[MethodImpl(MethodImplOptions.NoInlining)]
public Type FuncOnGenClass(int level)
{
switch (level)
{
case 0: return typeof(T);
case 1: return typeof(List<T>);
case 2: return typeof(List<List<T>>);
case 3: return typeof(List<List<List<T>>>);
case 4: return typeof(List<List<List<List<T>>>>);
case 5: return typeof(List<List<List<List<List<T>>>>>);
case 6: return typeof(List<List<List<List<List<List<T>>>>>>);
case 7: return typeof(List<List<List<List<List<List<List<T>>>>>>>);
case 8: return typeof(List<List<List<List<List<List<List<List<T>>>>>>>>);
case 9: return typeof(List<List<List<List<List<List<List<List<List<T>>>>>>>>>);
case 10: return typeof(List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>);
case 11: return typeof(List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>);
case 12: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>);
default: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>>);
}
}

[MethodImpl(MethodImplOptions.NoInlining)]
public Type FuncOnGenClass2(int level)
{
switch (level)
{
case 0: return typeof(T);
case 1: return typeof(List<T>);
case 2: return typeof(List<List<T>>);
case 3: return typeof(List<List<List<T>>>);
case 4: return typeof(List<List<List<List<T>>>>);
case 5: return typeof(List<List<List<List<List<T>>>>>);
case 6: return typeof(List<List<List<List<List<List<T>>>>>>);
case 7: return typeof(List<List<List<List<List<List<List<T>>>>>>>);
case 8: return typeof(List<List<List<List<List<List<List<List<T>>>>>>>>);
case 9: return typeof(List<List<List<List<List<List<List<List<List<T>>>>>>>>>);
case 10: return typeof(List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>);
case 11: return typeof(List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>);
case 12: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>);
default: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>>);
}
}

[MethodImpl(MethodImplOptions.NoInlining)]
public static void FuncOnGenClassTest()
{
var o1 = new GenClass<string>();
var o2 = new GenClass<object>();
var o3 = new GenClass<DictionaryExpansion>();

for (int j = 0; j < DictionaryExpansion.s_Iterations; j++)
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{
for (int i = 0; i < 15; i++)
o1.FuncOnGenClass(i);

for (int i = 0; i < 15; i++)
o2.FuncOnGenClass(i);

for (int i = 0; i < 15; i++)
o2.FuncOnGenClass2(i);

for (int i = 0; i < 15; i++)
o3.FuncOnGenClass(i);
}
}
}

[BenchmarkCategory(Categories.CoreCLR, Categories.Perflab)]
public class DictionaryExpansion
{
[MethodImpl(MethodImplOptions.NoInlining)]
public static Type GenFunc<T>(int level)
{
switch (level)
{
case 0: return typeof(T);
case 1: return typeof(List<T>);
case 2: return typeof(List<List<T>>);
case 3: return typeof(List<List<List<T>>>);
case 4: return typeof(List<List<List<List<T>>>>);
case 5: return typeof(List<List<List<List<List<T>>>>>);
case 6: return typeof(List<List<List<List<List<List<T>>>>>>);
case 7: return typeof(List<List<List<List<List<List<List<T>>>>>>>);
case 8: return typeof(List<List<List<List<List<List<List<List<T>>>>>>>>);
case 9: return typeof(List<List<List<List<List<List<List<List<List<T>>>>>>>>>);
case 10: return typeof(List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>);
case 11: return typeof(List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>);
case 12: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>);
default: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>>);
}
}

[MethodImpl(MethodImplOptions.NoInlining)]
public static Type GenFunc2<T>(int level)
{
switch (level)
{
case 0: return typeof(T);
case 1: return typeof(List<T>);
case 2: return typeof(List<List<T>>);
case 3: return typeof(List<List<List<T>>>);
case 4: return typeof(List<List<List<List<T>>>>);
case 5: return typeof(List<List<List<List<List<T>>>>>);
case 6: return typeof(List<List<List<List<List<List<T>>>>>>);
case 7: return typeof(List<List<List<List<List<List<List<T>>>>>>>);
case 8: return typeof(List<List<List<List<List<List<List<List<T>>>>>>>>);
case 9: return typeof(List<List<List<List<List<List<List<List<List<T>>>>>>>>>);
case 10: return typeof(List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>);
case 11: return typeof(List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>);
case 12: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>);
default: return typeof(List<List<List<List<List<List<List<List<List<List<List<List<List<T>>>>>>>>>>>>>);
}
}

[MethodImpl(MethodImplOptions.NoInlining)]
public static void GenFuncTest()
{
for (int j = 0; j < s_Iterations; j++)
{
for (int i = 0; i < 15; i++)
GenFunc<string>(i);

for (int i = 0; i < 15; i++)
GenFunc<object>(i);

for (int i = 0; i < 15; i++)
GenFunc2<object>(i);

for (int i = 0; i < 15; i++)
GenFunc<DictionaryExpansion>(i);
}
}

public static int s_Iterations = 100000;

[Benchmark]
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public void ExpandDictionaries()
{
GenClass<int>.FuncOnGenClassTest();

GenFuncTest();
}
}
}