STAT该过程指示什么？

如果您查看STAT column上图，您将看到Ss S S< SN and R+ 这表明什么？Process states。若是，那意义'Ss S< SN and R+'何在？

这些确实是过程状态。ps指示的处理状态为：

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.

并且其他字符是：

< 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 

您还可以通过在寻找发现这一切的男人页的ps，特别是PROCESS STATE CODES部分。