相关进程的总cpu与总内存使用率命令

[流年逝水]

在一个父进程下有多个子进程，指定采集其中几个子进程的总cpu与总内存使用率，用的命令是哪些呢？

[小笨和漂向北方]

You can find this information in /proc/PID/stat where PID is your parent process's process ID. Assuming that the parent process waits for its children then the total CPU usage can be calculated from utime, stime, cutime and cstime: utime %lu Amount of time that this process has been scheduled in user mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). This includes guest time, guest_time (time spent running a virtual CPU, see below), so that applications that are not aware of the guest time field do not lose that time from their calculations. stime %lu Amount of time that this process has been scheduled in kernel mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). cutime %ld Amount of time that this process's waited-for children have been scheduled in user mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). (See also times(2).) This includes guest time, cguest_time (time spent running a virtual CPU, see below). cstime %ld Amount of time that this process's waited-for children have been scheduled in kernel mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). http://stackoverflow.com/questions/12871090/how-to-calculate-cpu-utilization-of-a-process-all-its-child-processes-in-linux