BenchmarkDotNet SimpleJob属性：如何指定相当于net6.0-windows的RuntimeMoniker

Question

我想对面向 .NET 6.0 和 .NET Framework 4.8 的 WPF 类库中的类进行基准测试。这是项目文件：

WpfClassLibrary.cs：

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net6.0-windows;net4.8</TargetFrameworks>
    <UseWPF>true</UseWPF>
  </PropertyGroup>
</Project>

我要测试的类，简单实例化一个

System.Windows.Documents.FlowDocument

对象：

namespace WpfClassLibrary
{
    using System.Windows.Documents;

    public class WpfClass
    {
        public FlowDocument Document { get; } = new FlowDocument();
    }
}

这是基准测试项目的项目文件：

基准测试WpfClassLibrary.csproj：

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFrameworks>net6.0-windows;net4.8</TargetFrameworks>
    <UseWPF>true</UseWPF>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="BenchmarkDotNet" Version="0.13.7" />
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\WpfClassLibrary\WpfClassLibrary.csproj" />
  </ItemGroup>
</Project>

以及基准本身：

程序.cs：

namespace Benchmarks
{
    using BenchmarkDotNet.Attributes;
    using BenchmarkDotNet.Jobs;
    using BenchmarkDotNet.Running;
    using WpfClassLibrary;

    internal class Program
    {
        static void Main(string[] args)
        {
            var results = BenchmarkRunner.Run<WpfClassBenchmarks>();
        }
    }

    //[SimpleJob(RuntimeMoniker.Net48)]
    //[SimpleJob(RuntimeMoniker.Net60)]
    public class WpfClassBenchmarks
    {
        [Benchmark]
        public void WpfClass()
        {
            _ = new WpfClass();
        }
    }
}

如果我按原样运行，则基准测试会构建并运行良好。但是，如果我注释掉两个

SimpleJob

属性，.NET Framework 4.8 基准测试可以正常构建并运行，但 .NET 6.0 基准测试则不然。我收到以下错误：

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
 ---> System.IO.FileNotFoundException: Could not load file or assembly 'PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. The system cannot find the file specified.
File name: 'PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
   at WpfClassLibrary.WpfClass..ctor()
   at Benchmarks.WpfClassBenchmarks.WpfClass() in C:\Users\stevensd\source\BenchmarkingWpfClassLibrary\Benchmarks\Program.cs:line 23
   at BenchmarkDotNet.Autogenerated.Runnable_0.WorkloadActionNoUnroll(Int64 invokeCount) in C:\Users\stevensd\source\BenchmarkingWpfClassLibrary\Benchmarks\bin\Release\net6.0-windows\7eaf257f-9929-493b-9995-b7827893b4db\7eaf257f-9929-493b-9995-b7827893b4db.notcs:line 311
   at BenchmarkDotNet.Engines.Engine.RunIteration(IterationData data)
   at BenchmarkDotNet.Engines.EngineFactory.Jit(Engine engine, Int32 jitIndex, Int32 invokeCount, Int32 unrollFactor)
   at BenchmarkDotNet.Engines.EngineFactory.CreateReadyToRun(EngineParameters engineParameters)
   at BenchmarkDotNet.Autogenerated.Runnable_0.Run(IHost host, String benchmarkName) in C:\Users\stevensd\source\BenchmarkingWpfClassLibrary\Benchmarks\bin\Release\net6.0-windows\7eaf257f-9929-493b-9995-b7827893b4db\7eaf257f-9929-493b-9995-b7827893b4db.notcs:line 176
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
   at BenchmarkDotNet.Autogenerated.UniqueProgramName.AfterAssemblyLoadingAttached(String[] args) in C:\Users\stevensd\source\BenchmarkingWpfClassLibrary\Benchmarks\bin\Release\net6.0-windows\7eaf257f-9929-493b-9995-b7827893b4db\7eaf257f-9929-493b-9995-b7827893b4db.notcs:line 57

我认为发生的情况是，当未指定

SimpleJob

属性时，BenchmarkDotNet 正在使用适当的

net6.0-windows

名称构建基准。但是，当将

SimpleJob

属性与绰号

RuntimeMoniker.Net60

一起使用时，它是使用不正确的

net6.0

构建的。

如何指定一个使用运行时名称

net60-windows

而不是

net60

的简单作业？

源代码：https://github.com/DanStevens/BenchmarkingWpfClassLibrary

Answer 1

我认为您需要使用

IConfig

以编程方式执行此操作，即您不能直接使用

SimpleJobAttribute

：

internal class Program
{
    static void Main(string[] args)
    {
        var results = BenchmarkRunner.Run<WpfClassBenchmarks>(
            ManualConfig.Create(DefaultConfig.Instance)
                .AddJob(Job.Default.WithRuntime(ClrRuntime.Net48))
                .AddJob(Job.Default.WithToolchain(
                    CsProjCoreToolchain.From(
                        new NetCoreAppSettings(
                            targetFrameworkMoniker: "net6.0-windows",
                            runtimeFrameworkVersion: null,
                            name: "6.0")))));
    }
}

public class WpfClassBenchmarks
{
    [Benchmark]
    public void WpfClass()
    {
        _ = new WpfClass();
    }
}