newlisp 监控Linux进程 四

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用ps命令查看进程使用的cpu和内存

在前面用newlisp监控进程的时候，其实只是判断进程是否存活，如果不是，则重新启动。现在还要实现另一个功能，监控进程的cpu和memory占用情况。

如果用man ps查看ps命令，你会看到下面的参数：

CODE       HEADER  DESCRIPTION%cpu       %CPU    cpu utilization of the process in "##.#" format. Currently, it is the CPU time used divided by the time the processhas been running (cputime/realtime ratio), expressed as a percentage. It will not add up to 100% unless you arelucky. (alias pcpu).%mem       %MEM    ratio of the process's resident set size  to the physical memory on the machine, expressed as a percentage.(alias pmem).args       COMMAND command with all its arguments as a string. Modifications to the arguments may be shown. The output in this columnmay contain spaces. A process marked <defunct> 

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