0.最常用 pstree:
[root@iZ25dcp92ckZ temp]# pstree -a|grep multe
| | `-multepoolser
| | `-multepoolser
| | `-2*[{multepoolser}]
1. > top
可以显示所有系统进程
按u, 再输入相应的执行用户名称,比如Tom
可以看到Tom用户启动的所有进程和对应的pid
2. > pstack pid
可以看到此pid下,各线程的运行状态、
[root@test multepoolserver]# pstack 14944 (进程的PID号)
Thread 2 (Thread 0x41ed5940 (LWP 14945)):
#0 0x0000003c9ae0d5cb in read () from /lib64/libpthread.so.0
#1 0x00000000004017b6 in sync_additional_writing_worker ()
#2 0x0000003c9ae064a7 in start_thread () from /lib64/libpthread.so.0
#3 0x0000003c9a2d3c2d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x2b24b3094250 (LWP 14944)):
#0 0x0000003c9a2d4018 in epoll_wait () from /lib64/libc.so.6
#1 0x0000000000401d59 in Process ()
#2 0x00000000004029b8 in main ()
来自:http://blog.csdn.net/wind_324/article/details/6152912
方法一:
ps -ef f
用树形显示进程和线程
在Linux下面好像因为没有真正的线程,是用进程模拟的,有一个是辅助线程,所以真正程序开的线程应该只有一个。
方法二:
[root@apache dhj]# ps axm|grep httpd
方法三:
另外用pstree -c也可以达到相同的效果,但是没有线程号:
[root@apache dhj]# pstree -c|grep httpd
来自:http://blog.chinaunix.net/uid-346158-id-2131012.html
1. pstree
pstree以树结构显示进程
- root@119.10.6.*:~# pstree
- init─┬─NetworkManager
- ├─abrt-dump-oops
- ├─abrtd
- ├─atd
- ├─auditd───{auditd}
- ├─automount───4*[{automount}]
- ├─certmonger
- ├─crond
- ├─dbus-daemon
- ├─hald─┬─hald-runner─┬─hald-addon-acpi
- │ │ └─hald-addon-inpu
- │ └─{hald}
- ├─httpd─┬─httpd
- │ └─4*[httpd───26*[{httpd}]]
- ├─irqbalance
- ├─mcelog
- ├─6*[mingetty]
- ├─modem-manager
- ├─mysqld_safe───mysqld───38*[{mysqld}]
- ├─nginx───13*[nginx]
- ├─php-fpm───76*[php-fpm]
- ├─portreserve
- ├─rpc.idmapd
- ├─rpc.statd
- ├─rpcbind
- ├─rsyslogd───3*[{rsyslogd}]
- ├─2*[sendmail]
- ├─sshd───sshd───bash───pstree
- ├─udevd───2*[udevd]
- ├─wpa_supplicant
- └─xinetd
2. ps -Lf
$ ps -Lf 1892
如下:PHP进程共启动了0个线程
root@119.10.6.**:~# ps -Lf 1892
UID PID PPID LWP C NLWP STIME TTY STAT TIME CMD
root 1892 1 1892 0 1 Jan15 ? Ss 0:53 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
Mysql多个线程:
root@119.10.6.*:~# ps -Lf 3005
UID PID PPID LWP C NLWP STIME TTY STAT TIME CMD
mysql 3005 2011 3005 0 39 Jan15 ? Sl 2:25 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3081 0 39 Jan15 ? Sl 0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3082 0 39 Jan15 ? Sl 0:05 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3083 0 39 Jan15 ? Sl 0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3084 0 39 Jan15 ? Sl 0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3085 0 39 Jan15 ? Sl 0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3086 0 39 Jan15 ? Sl 0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
mysql 3005 2011 3087 0 39 Jan15 ? Sl 0:05 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=
3. pstack
pstack显示每个进程的栈跟踪,PHP的fpm主进程,发现这玩意是走的epoll:
root@119.10.6.23:~# pstack 1892
#0 0x00000030e9ae8fb3 in __epoll_wait_nocancel () from /lib64/libc.so.6
#1 0x0000000000856a74 in fpm_event_epoll_wait ()
#2 0x000000000084afff in fpm_event_loop ()
#3 0x0000000000845ee7 in fpm_run ()
#4 0x000000000084d900 in main ()
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