ccah-500 第28题 Which Linux commands help you to identify whether swapping is occurring

28.You suspect that your NameNode is incorrectly configured, and is swapping memory to

disk. Which Linux commands help you to identify whether swapping is occurring?(Select all

that apply)

A. free

B. df

C. memcat

D. top

E. jps

F. vmstat

G. swapinfo

Answer: A,D,F

Reference:http://www.cyberciti.biz/faq/linux-check-swap-usage-command/

C,G
不存在，B查看磁盘空间。

 


cat /proc/swaps , swapon -s
也可以。