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博客园 - 笑清风

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linux top 中的time+
笑清风 · 2020-10-20 · via 博客园 - 笑清风

linux top命令的TIME/TIME+值

top命令的TIME/TIME+是指的进程所使用的CPU时间,不是进程启动到现在的时间,因此,如果一个进程使用的cpu很少,那即使这个进程已经存在N长时间,TIME/TIME+也是很小的数值。

此外,如果你的系统有多个CPU,或者是多核CPU的话,那么,进程占用多个cpu的时间是累加的。

top的manual page:http://linux.die.net/man/1/top
看看他的帮助说明:
l: TIME — CPU Time
Total CPU time the task has used since it started. When ‘Cumulative mode’ is On, each process is listed with the cpu time that it and its dead children has used. You toggle ‘Cumulative mode’ with ‘S’, which is a command-line option and an interactive command. See the ‘S’ interactive command for additional information regarding this mode.
m: TIME+ — CPU Time, hundredths
The same as ‘TIME’, but reflecting more granularity through hundredths of a second.

2:32.45代表多长时间啊

从右到左分别是百分之一秒,十分之一秒,秒,十秒,分钟

这个就是2分钟,30秒,2秒,十分之4秒,百分之5秒,是按位来计算的。

来源于:https://blog.csdn.net/xiaocao9903/article/details/19914191