转换成秒 [英] convert jiffies to seconds

问题描述

我有一段用户空间代码，该代码正在解析/proc/PID/task/TID/stat以获取cpu的使用情况.我可以使用HZ来获取每秒的跳动，但是此代码可以移动到另一台具有不同配置值的机器上.有什么方法可以在运行时从用户空间获取HZ的值吗?

I've got a piece of userspace code which is parsing /proc/PID/task/TID/stat to get the cpu usage. I can use HZ to get the jiffies per second but this code could move to another machine which has a different configured value. Is there any way to get the value of HZ from userspace at runtime?

推荐答案

您将其除以从sysconf(_SC_CLK_TCK)获得的数字.

You divide it by the number you get from sysconf(_SC_CLK_TCK).

但是，我认为在Linux下，不管实际的时钟频率是多少，它总是100.它总是以100呈现给用户空间.

However, I think this is probably always 100 under Linux regardless of the actual clock tick, it's always presented to userspace as 100.

请参见man proc(5).

See man proc(5).

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