topic Re: CPU UTILIZATION in Operating System - HP-UX

CPU UTILIZATION

Rana_2 — Sun, 27 Apr 2003 05:34:40 GMT

hi,

I need same help on extracting process that consuming higher percentage of cpu using top command

plz,I NEED THIS IN SHELL SCRIPTING (hp-ux 11)

Re: CPU UTILIZATION

James Murtagh — Sun, 27 Apr 2003 08:04:47 GMT

Hi Rana,

If you really need to use top you could write the script like :

#!/usr/bin/ksh

TEMPFILE=/var/tmp/top.$$

top -n1 -f $TEMPFILE

cat $TEMPFILE | tail -2 | awk '{print $12,$13}'

rm $TEMPFILE

However, this will be a lot slower than something like :

#!/usr/bin/ksh

export UNIX95=XPG4

ps -efo pcpu,comm | sort -r | head -2

Simply because of the amount of data top has to collect and the IO taking place.

Regards,

James.

Re: CPU UTILIZATION

Rana_2 — Sun, 27 Apr 2003 08:55:29 GMT

thanx James,

The top commad work perfect,
but the ps -ef giving wrong process.

Re: CPU UTILIZATION

James Murtagh — Sun, 27 Apr 2003 13:53:44 GMT

Hi Rana,

The output may be different every time you run this as it only reports the process using the highest percentage of the CPU in that interval. There was an issue with the ps command on 11.00, fixed with the following patch:

PHCO_18446 s700_800 11.00 ps(1) cumulative patch

This patch has no dependencies and does not require a reboot. However, the latest and recommended ps patch is PHCO_26274 and has a couple of dependencies, which will require a reboot if the kernel dependencies are not already installed.

Regards,

James.

Re: CPU UTILIZATION

Steven E. Protter — Sun, 27 Apr 2003 17:21:52 GMT

Here is a handy shell script to collect performance data on your system. It can be adapted to whatever time period you wish and runs background. ATTACHED

I've had the same issue as the patches noted above me in the thread, getting those patches in and the March 2003 Quality Pack are a good idea.

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