Determing CPU usage

[Sonison James]

Hello,

I would like to monitor the CPU usage. What would be the best command for this? I would like to use the commands top or ps for this but I am having some problems. Firstly the value under "USER" does not seem to be in sync with the CPU usage of the processes. I tried summing up the values in the %CPU column of top and also the %CPU column of ps but in both the cases the sum was > 100% Any info about how these values are to be interpreted would be really valuable.

Thanks and regards
Sonison James

[Sundar_7]

Hi,

Try

# UNIX95= ps -ef -o user,uid,pid,ppid,pcpu,args | sort -nbk 5

The above command should list all the processes sorted based on their CPU usage.

Thanks,

Sundar.

[Hari Kumar]

we have SAR for that
#sar -u 5 100 { for CPU load by user if u have multiple processors u can use M as option)
#sar -q 5 100 ( for run queue load)
# sar -v 5 100 ( for usage of Kernel for each value)
#sar -d 5 100 ( for disk i/o)

# sar -c 5 100
we have also 'b', 'w', options for getting buffer and swap values.
and we also have Glance plus, PRM e.t.c available for CPU usage.
Any way top is always on top for me.

Thanks

[Norman_21]

Hi,

Your best bet is Glance Pluse! Try it for free, it's easier to understand and monitor!

Hope this help!

[Tim D Fulford]

Hi

As Xman said GlancePlus Pak (which includes MeasureWare) This has now been re-branded as OpenView Performance Agent. It dies cost but I dont think it is enourmously expensive.

top is good for a quick idea. Your top problems may be fixed in patch PHCO_26020. But Glance or MeasureWare are the dogs b******s, as you can either look at the current state OR the wahat it was like last night. I generally find you get called about a problem that has passed, so MeasureWare is invaluabl in those cases.

Regards

Tim

[Michael Steele_2]

Got to go with vamsi mohan on this one. 'sar -u # #' or 'glance advisor' for collecting data.

[Hemanth Gurunath Basrur]

Hello Sonison,

Refer to manpages for more information.

top(1) manpage

http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-60103/B2355-60103_top.html&con=/hpux/onlinedocs/B2355-60103/00/04/422-con.html&toc=/hpux/onlinedocs/B2355-60103/00/04/422-toc.html&searchterms=command%7ctop&queryid=20030928-210530

ps(1) manpage

http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-60103/B2355-60103_top.html&con=/hpux/onlinedocs/B2355-60103/00/03/337-con.html&toc=/hpux/onlinedocs/B2355-60103/00/03/337-toc.html&searchterms=ps&queryid=20030928-210710

Hope this helps.

Regards,
Hemanth

[Steven E. Protter]

I'm attaching my handy dandy, performance data collection script. It's HP in origin, improved by me. It runs background for any length of time you set.

You'll like it.

based on sar.

SEP

[Jakes Louw]

Oy, SEP! Where's that attachment? ;->