Question

How to monitor CPU Usage

Asked by: mikekwok

I would like to ask if there is any command that I can monitor CPU Usage in Redhat 7.1 .

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Asked On
2004-04-02 at 00:03:33ID20941063
Tags

cpu

,

usage

,

monitor

Topic

Linux Administration

Participating Experts
7
Points
20
Comments
12

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Answers

 

by: sunnycoderPosted on 2004-04-02 at 00:23:19ID: 10739089

Hi mikekwok,

top

Sunnycoder

 

by: paullamhkgPosted on 2004-04-02 at 01:14:05ID: 10739251

Sunnycoder is correct 'top' is the command you need

top - display top CPU processes

and the result will be something like this

 17:09:21  up 1 day,  3:17,  1 user,  load average: 0.00, 0.00, 0.00
62 processes: 60 sleeping, 2 running, 0 zombie, 0 stopped
CPU states:   1.1% user   0.0% system   0.0% nice   0.0% iowait  98.8% idle
Mem:   126044k av,  122612k used,    3432k free,       0k shrd,   50008k buff
                     92240k actv,       0k in_d,    1244k in_c
Swap: 1044144k av,    3560k used, 1040584k free                   25484k cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND

so it's not only for CPU, it's also for RAM usage and swap space and which application using how many CPU and RAM/SWAP.

man top to get more detal :)

 

by: willy134Posted on 2004-04-07 at 08:39:55ID: 10775776

do you have xload installed

xload is a classic unix tool that graphs the cpu usage so you can see trends.

 

by: mikekwokPosted on 2004-04-07 at 18:44:23ID: 10780188

how can i check if i have installed xload?
how to use it ?

 

by: sunnycoderPosted on 2004-04-07 at 22:20:45ID: 10780957

mikekwok,

Did you try top ?

On your command line prompt, type "top" and hit enter...

xload, I guess, is used in the same way ... on your command promt in an xterminal (not on console) type xload and hit enter

 

by: mikekwokPosted on 2004-04-07 at 23:11:58ID: 10781176

i have tried top. Thanks. will top generate log file for me to monitor the cpu usage ?

 

by: sunnycoderPosted on 2004-04-07 at 23:17:52ID: 10781199

Top will not generate a log file .. it will give you current statistics every five minutes or so ...

read the man page for detailed information

man top

 

by: mariocarbonePosted on 2004-06-22 at 01:26:01ID: 11367042

you can install sar command then you write "sar 10 1080 -o sarlog.bin" 1080 times every 10 seconds= 3 hours it will give you a binary log file called sarlog.bin after that to transform the binary log to a text format log you must write "sar -f sarlog.bin > sarlog.log"

I hope this right for you!

 

by: drubarthPosted on 2004-06-22 at 14:00:53ID: 11373950

You should use mrtg for monitoring CPU, Memory, Load Average, and more over time.  It shows graphs for daily, weekly, monthly, and yearly monitoring. You can find more info here:

http://people.ee.ethz.ch/~oetiker/webtools/mrtg/

Good luck!

 

by: mikekwokPosted on 2004-06-22 at 18:24:32ID: 11375410

i know that MRTG is good .
do u have any website teaching me hwo to install MRTG?
Thanks.
I would like to monitor my linksys router using mrtg but i dunno how to set . Would you please help me ? Thanks.

 

by: LawkiePosted on 2008-09-26 at 06:28:07ID: 22579225

Above is all pretty old, go for http://www.cacti.net/
It's easy and pretty powerful, let me know if you need further assistance.

Kind regards,

Rense

 

by: unvanquishableAbhayPosted on 2009-07-09 at 12:17:15ID: 24817204

Top should just solve the purpose.

20120131-EE-VQP-002

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