Linux:CPU状态信息us,sy,ni,id,wa,hi,si,st含义

介绍

使用系统命令top即可看到如下类似信息:

Cpu(s):  0.0%us,  0.5%sy,  0.0%ni, 99.5%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st

说明:

I try to explain  these:
us: is meaning of "user CPU time"
sy: is meaning of "system CPU time"
ni: is meaning of" nice CPU time"
id: is meaning of "idle"
wa: is meaning of "iowait" 
hi:is meaning of "hardware irq"
si : is meaning of "software irq"
st : is meaning of "steal time"

中文翻译为:

us 用户空间占用CPU百分比
sy 内核空间占用CPU百分比
ni 用户进程空间内改变过优先级的进程占用CPU百分比
id 空闲CPU百分比
wa 等待输入输出的CPU时间百分比
hi 硬件中断
si 软件中断 
st: 实时

举个栗子

Linux:CPU状态信息us,sy,ni,id,wa,hi,si,st含义_第1张图片

cpu6、cpu7:仅仅使用用户空间,使用率100%

cpu19:仅仅使用内核空间,使用率100%

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