linux进程状态 Ss,Ss+,D,R+,S<

最新推荐文章于 2025-10-24 23:58:46 发布

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这篇博客详细解释了在Linux中，通过`ps -aux`命令查看到的进程状态，包括D（不可中断的睡眠，通常与IO相关）、R（运行或可运行）、S（可中断的睡眠）、T（被作业控制信号停止）、t（被调试器在跟踪过程中停止）、W（无效状态，自2.6.xx内核以来不再使用）、X（死亡状态，应该很少见）、Z（僵尸进程，已终止但未被父进程回收）。另外，对于BSD格式和使用stat关键字时，还可能显示的状态包括<（高优先级，不友好于其他用户）、N（低优先级，对其他用户友好）、L（页面锁定在内存中，用于实时和自定义IO）、s（会话领导者）、l（使用CLONE_THREAD，如NPTL pthreads实现的多线程）和+（位于前台进程组）。

ps -aux

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 by job control signal
t stopped by debugger during the tracing
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