scp不动了，linux进程的状态问题

Kevin__Zhang

发现一个scp进程还在run ,  但是检查timestamp已经很久没有更新了,检查这个进程的状态:
alpcisddb495[oracle]_dshbrdt> ps -eo user,pid,stat,rss,args --sort rss |grep 1020
oracle    1020 SN    1084 /bin/sh ./scp.sh

1.这里的SN是什么意思? 是意味着scp hang住了吗?
2.除了SN 还有什么状态呢?
3.如果SN是hang住的意思, 那么什么命令可以使得其变成活动状态继续工作?

taojie2000

S休眠状态  N低优先级   

S Interruptible sleep (waiting for an event to complete)
N low-priority (nice to other users)

MMMIX

Kevin__Zhang 发表于 2012-04-03 10:22
1.这里的SN是什么意思? 是意味着scp hang住了吗?

 意味著你應該查 ps 的手冊。

Kevin__Zhang

谢谢,  去查了下文档:

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