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