Several commands to view system resource usage in linux

 

Load view command: top

http://www.cnblogs.com/kaituorensheng/p/3602805.html

http://www.jb51.net/LINUXjishu/34604.html 

 

Memory check command: vmstat

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

http://blog.chinaunix.net/uid-29659676-id-4254469.html

 

Check memory: free

http://www.cnblogs.com/imapla/archive/2013/02/15/2912752.html