Linux C ++:如何分析由于缓存未命中而浪费的时间? [英] Linux C++: how to profile time wasted due to cache misses?

问题描述

我知道我可以使用gprof对我的代码进行基准测试.

I know that I can use gprof to benchmark my code.

但是，我遇到了这个问题-我有一个智能指针，它具有额外的间接级别(可以将其视为代理对象).

However, I have this problem -- I have a smart pointer that has an extra level of indirection (think of it as a proxy object).

结果，我有了这个额外的层，几乎可以实现所有功能，并具有缓存功能.

As a result, I have this extra layer that effects pretty much all functions, and screws with caching.

有没有一种方法可以测量由于高速缓存未命中而导致CPU浪费的时间?

Is there a way to measure the time my CPU wastes due to cache misses?

谢谢！

推荐答案

您可以尝试 cachegrind 这是前端kcachegrind.

You could try cachegrind and it's front-end kcachegrind.

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