c233 plugins # ps -elf|head -1
F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY TIME CMD
4 S root 28149 4204 0 80 0 - 16283 poll_s Jul05 ? 00:00:00 sshd: root
73
PROCESS FLAGS
The sum of these values is displayed in the "F" column, which is provided by the flags output specifier.
1 forked but didn't exec
4 used super-user privileges
(1)S列.
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.
(3)C列.C pcpu cpu utilization
(4)
command COMMAND see args. (alias args, cmd).
sz SZ size in physical pages of the core image of the process. This
includes text, data, and stack space. Device mappings are currently
excluded; this is subject to change. See vsz and rss.
(5)WCHAN列.
wchan WCHAN name of the kernel function in which the process is sleeping,
a "-" if the process is running, or a "*" if the process is
multi-threaded and ps is not displaying threads.
二、统计当前运行的线程总数."-L"
c233 plugins # ps -eLf|grep -v $$|wc -l //-L Show threads, possibly with LWP and NLWP columns
646
c233 plugins # ps -eLf|grep -v $$|tail
UID PID PPID LWP C NLWP STIME TTY TIME CMD
root 1 689 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd
root 1 690 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd
root 4204 28149 0 1 Jul05 ? 00:00:00 sshd: root
NLWP (number of threads)
LWP (thread ID)
c233 plugins # ps -ef|grep nscd
root 23678 1 0 Jun30 ? 00:15:32 /usr/sbin/nscd
三、Linux下查看某个进程的线程数量.
1.根据进程号进行查询：
# pstree -p 进程号 //-p pid
# top -Hp 进程号 //-H : Threads toggle
2.根据进程名字进行查询：
# pstree -p `ps -e | grep sshd | awk '{print $1}'`
# pstree -p `ps -e | grep sshd | awk '{print $1}'` | wc -l
四、统计正在sleeop的线程总数.
d231 ~ # for i in `ps aux|awk '$8~/S/{print $2}'`;do //如何让其累加？？如何查看正在运行的线程？？？？
> m=`pstree -p $i|wc -l`
> echo $m
> done
No such user name: PID
0
1184
42
1
1
13
1
1
1
1
1
1
1
1
2
2
0
0
61
1
8
1
1088
1