Linux系统如何查看进程的线程数?

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  Linux系统进程是由线程组成的,当然Linux进程下的线程数是不固定的,可以是一个进程,也可以是多个进程。本文就来教大家Linux系统如何查看进程的线程数?

  一、使用命令查看Linux进程的线程数

  1、使用top命令,具体用法是 top -H

  加上这个选项,top的每一行就不是显示一个进程,而是一个线程。

  2、使用ps命令,具体用法是 ps -xH

  这样可以查看所有存在的线程,也可以使用grep作进一步的过滤。

  3、使用ps命令,具体用法是 ps -mq PID

  这样可以看到指定的进程产生的线程数目。

  二、Linux系统工具查看Linux进程

  看看这个目录吧,/proc/5000/ 这里面有你所有想要的。其实stat代表着当前的一些信息。

  使用ps命令来查看进程的时候,进程状态分别对应的含义如下:

  D 不可中断睡眠 (通常是在IO操作) 收到信号不唤醒和不可运行, 进程必须等待直到有中断发生

  R 正在运行或可运行(在运行队列排队中)

  S 可中断睡眠 (休眠中, 受阻, 在等待某个条件的形成或接受到信号)

  T 已停止的 进程收到SIGSTOP, SIGSTP, SIGTIN, SIGTOU信号后停止运行

  W 正在换页(2.6.内核之前有效)

  X 死进程 (未开启)

  Z 僵尸进程 进程已终止, 但进程描述符存在, 直到父进程调用wait4()系统调用后释放BSD风格的

  《 高优先级(not nice to other users)

  N 低优先级(nice to other users)

  L 页面锁定在内存(实时和定制的IO)

  s 一个信息头

  l 多线程(使用 CLONE_THREAD,像NPTL的pthreads的那样)

  + 在前台进程组

  以上就是Linux查看进程的线程数的方法了,Linux进程的线程数是进程的一个重要参数,也是管理Linux进程应该要知道的信息。

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