根据挂钟时间获取gprof配置文件？ [英] Get gprof to profile based on wall-clock time?

问题描述

我的理解是，默认情况下gprof会考虑CPU时间。有没有办法根据挂钟时间得到它的配置文件？

My understanding is that by default gprof takes into account CPU time. Is there a way to get it to profile based on wall-clock time?

我的程序做了很多磁盘i / o，所以它使用的CPU时间只代表实际执行时间的一部分。我需要知道磁盘i / o的哪些部分占用的时间最多。

My program does a lot of disk i/o, so the CPU time it uses only represents a fraction of the actual execution time. I need to know which portions of the disk i/o take up the most time.

推荐答案

通过使用来自google-perftools的分析器。要将google profiler切换到挂钟模式，请将环境变量CPUPROFILE_REALTIME = 1。

You can measure wall-clock time by using profiler from google-perftools. To switch google profiler to wall-clock mode, set the environment variable CPUPROFILE_REALTIME=1.

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