c ++上的精确时间测量 [英] Exact time measurement on c++

问题描述

我正在进行一个项目，我必须比较一些排序算法的执行时间。但是，正如你所知，有些值是关闭的，但我看不出差异。我必须知道，差别很小，例如1纳秒或者其他东西。



可以测量非常小的差异 - 小于微秒或其他东西。

I am on a project and i have to compare some sorting algorithms execution times. However, as you know some values are to close, but i can not see difference. I have to know, small difference for example 1 nanosecond or something.

Is that possible to measure very small difference-smaller then microsecond or something.

推荐答案

我写了一个很好的高分辨率C ++秒表类，位于 hwindatetime.h [ ^ ]。



很容易使用许多.Net开发人员都熟悉的界面。



Best问候

Espen Harlinn

I've written a nice high resolution C++ Stopwatch class, located at the bottom of hwindatetime.h[^].

It's easy to use with an interface that should be familiar to many .Net developers.

Best regards
Espen Harlinn

Plase看看：

http://www.informit.com/guides/content.aspx?g=cplusplus&seqNum=272 [ ^ ]

http://stackoverflow.com/questions/1825720/c-high-precision-time-测量窗口 [ ^ ]

http://stackoverflow.com/questions/275 004 / c-timer-function-to-time-in-nano-seconds [ ^ ]

Plase have a look:
http://www.informit.com/guides/content.aspx?g=cplusplus&seqNum=272[^]
http://stackoverflow.com/questions/1825720/c-high-precision-time-measurement-in-windows[^]
http://stackoverflow.com/questions/275004/c-timer-function-to-provide-time-in-nano-seconds[^]

看到这个，它有帮助：



http://stackoverflow.com / questions / 1825720 / c-high-precision-time-measurement-in-windows [ ^ ]

See this, hpoe it helps:

http://stackoverflow.com/questions/1825720/c-high-precision-time-measurement-in-windows[^]

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