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Linux下ps aux解释

2024-07-21 06:44:29   218人阅读

ps aux的功能是打印出所有进程

ps是最基本也是最强大的进程查看命令

aux都是参数

a = show processes for all users 显示所有用户的进程
u = display the process‘s user/owner 显示用户
x = also show processes not attached to a terminal 显示无控制终端的进程

在下面即将介绍的axo中

o = 格式，用户定义的

1) Displaying top 10 CPU_consuming processes: 展示消耗CPU最多的10个进程
 # ps aux|head -1; ps aux|sort -rn +2|head -10
2) Displaying top 10 memory-consuming processes: 展示消耗内存最多的10个进程
# ps aux|head -1; ps aux|sort -rn +3|head

To view custom columns we use the below command
[root@server ~]# ps axo stat,euser,ruser,%mem,pid,%cpu,comm

Here 
stat -> status of the process
euser -> effective user
ruser -> real user
%mem -> percentage of memory utilized by process
pid -> process ID
%cpu -> percentage of memory utilized by process
comm -> command

To view top 10 memory utilized process process
 [root@server ~]# ps axo ruser,%mem,comm,pid,euser | sort -nr | head -n 10
 RUSER    %MEM COMMAND           PID EUSER
root      0.4 sshd             3189 root
root      0.4 sshd             2486 root
root      0.2 master           1194 root
root      0.1 rsyslogd         2918 root
root      0.1 ps               3355 root
root      0.1 login            1217 root
root      0.1 bash             3191 root
root      0.1 bash             3080 root
root      0.1 bash             2488 root

To view top 10 memory utilized process process
[root@server ~]# ps axo ruser,%cpu,comm,pid,euser | sort -nr | head -n 10
RUSER    %CPU COMMAND           PID EUSER
root      0.2 events/0            7 root
root      0.0 watchdog/0          6 root
root      0.0 vsftpd           1118 root
root      0.0 vmmemctl          593 root
root      0.0 usbhid_resumer     41 root
root      0.0 udevd             420 root
root      0.0 udevd            1235 root
root      0.0 udevd            1234 root
root      0.0 sync_supers        13 root


Reference：

http://www.360doc.com/content/12/0405/19/1671317_201194366.shtml

http://www.unixmantra.com/2013/07/top-12-ps-performance-commands.html

http://easylinuxtutorials.blogspot.com/2013/10/how-to-find-top-10-cpu-memory-consuming.html

Linux下ps aux解释


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