topic Simple question about RAM checking in Operating System - HP-UX

Simple question about RAM checking

Sunny Chen — Fri, 15 Sep 2000 17:14:48 GMT

I use "Glance" find out my HP server 's memory is 100% FULL, my question is :
" If I don't use "glance", which hp-ux command can be used to check memory usage?"
" After that, which command I can use to get the process id that use the most ram?"

Thank you very much!

Re: Simple question about RAM checking

James R. Ferguson — Fri, 15 Sep 2000 17:18:36 GMT

Sunny:

# swapinfo -ta

Also vmstat and sar can be very useful. See the man pages for both.

...JRF...

Re: Simple question about RAM checking

James R. Ferguson — Fri, 15 Sep 2000 17:26:32 GMT

Hi:

Oh, almost forgot, 'top' is good for looking at indivicual processes' memory. See man pages for top.

...JRF...

Re: Simple question about RAM checking

Alan Riggs — Fri, 15 Sep 2000 17:26:50 GMT

To find which processes are using the most memory, you can use the ps command. To use teh XPG4 flags, t is necessary to set the UNIX95 environmental variable.

export UNIX95=1
ps -e -o "user,pid,ppid,sz,vsz,comm" | sort -rn +4|more

Re: Simple question about RAM checking

Tim Malnati — Fri, 15 Sep 2000 18:01:35 GMT

Hey Alan,

Good call! Works like a charm, and with Linux too. I was not very aware of UNIX95 prior to this (heard of it), but it suggests that a considerable amount of portability issues can be easily dealt with. Thanks again.

Re: Simple question about RAM checking

Alan Riggs — Fri, 15 Sep 2000 18:44:34 GMT

You're welcome. I was happy when I learned about it, too.

I used to like the old Berkley flags (ps gv, etc.) on AIX and was frustrated when I could not get the same functionaliy on hp. I had never tried it on linux -- glad to know it unctions there, too.