top, vmstat command

top: The ranking of system resources occupied by each process
. It is mainly used to monitor the real-time load rate of the system, the resource occupancy rate of the process, and whether other system status attributes are normal

. (1) In the top basic view, press the number "1" on the keyboard, you can Monitor the status of each logical CPU
(2) Hit the keyboard "b" (turn on/off the highlighting effect), the top view changes as follows:
(3) Hit the keyboard "x" (turn on/off the highlighting effect of the sorting column )
(4) By "shift + >" or "shift + <" you can change the sorting column to the right or left
(5) Display the complete command top -c
(6) top -p 574
Reference:
http://www.jb51 .net/LINUXjishu/34604.html

http://www.cnblogs.com/peida/archive/2012/12/24/2831353.html

vmstat : Display the current running status of the server The
general use of the vmstat tool is through two numerical parameters To complete, the first parameter is the number of sampling time intervals, the unit is seconds, the second parameter is the number of times of sampling

Reference :

http://www.cnblogs.com/ggjucheng/archive/2012/01/05/ 2312625.html