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  • Linux进程状态 ( Linux Process State Codes)

    进程状态代码及说明:

    STATE代码 说明
    D 不可中断的睡眠. 通常是处于I/O之中.
    R 运行中/可运行. 正处于运行队列中.
    S 可中断的睡眠. 等待某事件发生.
    T 已停止. 可能是因为shell作业控制或进程正被调试.
    W 分页中. 不适用于内核2.6.xx及以后的版本.
    X 死亡. 再也不会出现.
    Z 死/僵尸进程.
    < 高优先级任务.
    N 低优先级任务.
    L 有分页内存被锁定到内存中. 用于实时任务和自定义I/O.
    s 会话期首进程.
    l 属多线程进程. 就像pthreads那样的克隆线程.
    + 处于前台进程组.

    英语原文:

    PROCESS STATE CODES
           Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will
           display to describe the state of a process:

                   D    uninterruptible sleep (usually IO)
                   R    running or runnable (on run queue)
                   S    interruptible sleep (waiting for an event to complete)
                   T    stopped, either by a job control signal or because it is being traced
                   W    paging (not valid since the 2.6.xx kernel)
                   X    dead (should never be seen)
                   Z    defunct ("zombie") process, terminated but not reaped by its parent

           For BSD formats and when the stat keyword is used, additional characters may be displayed:

                   <    high-priority (not nice to other users)
                   N    low-priority (nice to other users)
                   L    has pages locked into memory (for real-time and custom IO)
                   s    is a session leader
                   l    is multi-threaded (using CLONE_THREAD, like NPTL pthreads do)
                   +    is in the foreground process group

    参考:
       1. 在线手册: http://man7.org/linux/man-pages/man1/ps.1.html

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  • 原文地址:https://www.cnblogs.com/memset/p/linux_process_state_code.html
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