linux ps-l命令详解 ps命令实用方法.ps -l ps -L详解

一、统计sleep状态的进程.

c233 plugins # ps -elf|head -1

F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY TIME CMD

4 Sroot 28149 4204 0 80 0 - 16283 poll_s Jul05 ? 00:00:00 sshd: root

c233 plugins #

ps -efl|awk '$2~/S/{print $0}'|wc -l //-l long format.

73

解释===>

(1)F列.

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.

wchanWCHAN 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 LWPC NLWPSTIME TTY TIME CMD

root 23678 1 688 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 689 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 690 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 691 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 692 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 693 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 694 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 695 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 23678 1 696 0 36 Jul01 ? 00:00:06 /usr/sbin/nscd

root 28149 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

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