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 但不知什么含义？google之 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 "iow…