topic Re: Memory Check in Operating System - HP-UX

Memory Check

Allen Karczmarek — Thu, 03 Oct 2002 20:02:43 GMT

Is there a command to check the memory usage on an HP9000. I've got several databases on the box and need to add another. I'm trying to find out how much more memory I have to allocate.

Thanks,
Allen

Re: Memory Check

Sean OB_1 — Thu, 03 Oct 2002 20:06:04 GMT

Top will give you a rough estimate of what is available.

But Glance is the only real way to see what is being used and how much is physically free.

Re: Memory Check

A. Clay Stephenson — Thu, 03 Oct 2002 20:09:19 GMT

By far, your best choice is Glance. You can use it to get per process values. If you don't have Glance, you can install a fully functional trial version from your Application CD's. Glance will also show shared memory usage.

You can also use top and ps but these metrics are less accurate and more limited. You must also use ipcs to see shared memory usage but again it's not as directed as Glance is for spotting per process usage.

Re: Memory Check

Allen Karczmarek — Thu, 03 Oct 2002 20:22:03 GMT

Thanks !!!!

Re: Memory Check

steven Burgess_2 — Thu, 03 Oct 2002 20:27:17 GMT

Hi

vmstat -n 1 1 displays the ammount of free RAM

Script to check free memory

let x=$(grep -i
physical: /var/adm/syslog/syslog.log | head -1 | awk '{print $7}
')/1048
let z=$(vmstat|tail -1|awk '{print $5}')*4096;let z=$z/1000000
let free=100000/$x*$z
let free=$free/1000
let free=100-$free
echo "$x Mb physical memory \n$z Mb memory free \n$free % used"

HTH

Steve

Re: Memory Check

MANOJ SRIVASTAVA — Thu, 03 Oct 2002 20:53:15 GMT

Hi Allen

here is a simple C program that iI got from the forums whihc can be comipled and can give o/p as :

Memory Stat total used avail %used
physical 32764.0 8058.4 24705.6 25%
active virtual 531.3 128.9 402.4 24%
active real 597.0 136.0 461.0 23%
memory swap 26522.5 3738.2 22784.3 14%
device swap 2378.0 2365.5 12.5 99%

I ahve attached the script

Manoj Srivastava