Arch Linux

geek.arnuld

Member

From: INDIA

Registered: 2007-05-03

Posts: 135

Website

output of "top" command

i can't understand the CPU usage in top command. even the man page does not describe the necessary options. here is what i have from the "top":

Cpu(s):  3.7%us,  1.0%sy,  0.0%ni, 95.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st

how will i know which option represents the CPU  in use and which represents free CPU ?  (i mean the meanings of us, wa, id and sy )

also, what is the difference between VIRT, RES  and SHR memories. which one represents RAM ?

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http://lispmachine.wordpress.com

lucke

Member

From: Poland

Registered: 2004-11-30

Posts: 4,018

Re: output of "top" command

us is processor time used by userspace processes, sy by kernel, ni by niced processes, id means idle, wa denotes waiting for I/O, hi and si are hard/soft interrupts.

Read "man top" for VIRT etc. descriptions.