小编dig*_*ity的帖子

我使用 Ubuntu 12.04.1 Linux。我看到了一个进程的命令%CPU和C输出格式之间的区别ps。ps手册页中没有明确指出。

手册页说：

  CODE       HEADER  DESCRIPTION
  %cpu       %CPU    cpu utilization of the process in "##.#" format. Currently, 
                     it is the CPU time used divided by the time the 
                     process has been running (cputime/realtime ratio),
                     expressed as a percentage. It will not add up to 100%
                     unless you are lucky. (alias pcpu).
  c          C       processor utilization. Currently, this is the integer                  
                     value of the percent usage over the lifetime of the …