请问如何取得进程占用的%cpu

daniel_zhy

用ps取得的cpu使用的百分比和topas看到的不同。用什么命令能取到topas看到的那个值。

lijinshansir

ps  aux

daniel_zhy

由于我的程序运行时间比较长，用ps得到的时间很不准确。下面是ps中%cpu的解解，所以用ps是不可行的。大家有好的方法么？

Three of the possible ps output columns report CPU use, each in a different way.

Column
    Value Is:
C
    Recently used CPU time for the process (in units of clock ticks).
TIME
    Total CPU time used by the process since it started (in units of minutes and seconds).
%CPU
    Total CPU time used by the process since it started, divided by the elapsed time since the process started. This is a measure of the CPU dependence of the program.