.NET 中的高分辨率计时器 [英] High resolution timer in .NET

问题描述

我想对我的代码进行一些基本的分析，但发现 C# 中的 DateTime.Now 只有大约 16 毫秒的分辨率.一定有更好的时间保持构造，我还没有找到.

I'd like to do some basic profiling of my code, but found that the DateTime.Now in C# only have a resolution of about 16 ms. There must be better time keeping constructs that I haven't yet found.

推荐答案

下面是一段操作计时的示例代码:

Here is a sample bit of code to time an operation:

Dim sw As New Stopwatch()
sw.Start()
//Insert Code To Time
sw.Stop()
Dim ms As Long = sw.ElapsedMilliseconds
Console.WriteLine("Total Seconds Elapsed: " & ms / 1000)

最妙的是它也可以恢复.

And the neat thing is that it can resume as well.

Stopwatch sw = new Stopwatch();
foreach(MyStuff stuff in _listOfMyStuff)
{
    sw.Start();
    stuff.DoCoolCalculation();
    sw.Stop();
}
Console.WriteLine("Total calculation time: {0}", sw.Elapsed);

System.Diagnostics.Stopwatch 类将如果您的系统上有高分辨率计数器，请使用高分辨率计数器.

The System.Diagnostics.Stopwatch class will use a high-resolution counter if one is available on your system.

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