2015年(55)
分类: LINUX
2015-01-22 11:34:48
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] ├─-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
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 ()
You have new in /var/spool/mail/root