topic Re: memory calculations in Operating System - HP-UX

memory calculations

suryanarayana_1 — Mon, 14 Jul 2003 15:42:24 GMT

Is there any simple script or utility in HP-UX to get peak and average memory utilization of the day.Write now iam using a script to collect free memory pages and calculating to get the above mentioned values.We don't have glance plus or measureware.This is the script iam using.

#!/sbin/sh
dd=`date +%b%d`
var1=`echo freemem/D|adb /stand/vmunix /dev/kmem|cut -f 2 -d :`
echo "The value of freemem is:"$var1>>/var/adm/memlog/freemem_$dd

Thank you.

Re: memory calculations

Paula J Frazer-Campbell — Mon, 14 Jul 2003 15:48:08 GMT

Hi

There is a 60 trial of glance on your HP cds

Paula

Re: memory calculations

Paula J Frazer-Campbell — Mon, 14 Jul 2003 15:50:04 GMT

HI

Also look at sar (Man sar)

Paula

Re: memory calculations

Zeev Schultz — Mon, 14 Jul 2003 15:53:50 GMT

I guess its almost same value you receive from
vmstat:
free pages -
In my case:
freemem = 65278 (x4,as 4k is a page size)
free vmstat column = 66811...

So you can use vmstat 60 for 1 min basis.
Again,checking free pages list is very-very rough of performance.

Zeev

Re: memory calculations

suryanarayana_1 — Tue, 15 Jul 2003 09:37:00 GMT

Thanks for your response.I forgot to mention,I kept that script in crontab and executing every minute.I would like to know what iam doing is write or wrong.

Re: memory calculations

Bernhard Mueller — Tue, 15 Jul 2003 09:57:37 GMT

Hi,

a little off track, but:
if you have one or more cronjobs running every single minute you surely blow up /var/adm/cron/log
You might consider a cronjob moving/zipping/emtpying this logfile.

Regards,
Bernhard