topic Re: Available physical memory in Operating System - HP-UX

Available physical memory

Dhananjaya Amarakoon — Sun, 15 Apr 2007 03:36:21 GMT

Dear All,

Dear All,

In our office environment we have three HP Integrity rx7620 servers that are running HP-UX 11.23.
Server one and two run under cluster environment and other is running separately.

In above three severs I need to do memory (physical and swap) usages monitoring (available, used & free) using command line.
I used swapinfo –mat command for that. Here I have show three outputs of the three servers.

Server01
---------
#swapinfo -mat
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4096 0 4096 0% 0 - 1 /dev/vg00/lvol2
dev 12000 0 12000 0% 0 - 1 /dev/vg00/lvol10
reserve - 4126 -4126
memory 8151 3004 5147 37%
total 24247 7130 17117 29% - 0 -

server02
---------
#swapinfo -mat
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4096 834 3262 20% 0 - 1 /dev/vg00/lvol2
dev 12000 825 11175 7% 0 - 1 /dev/vg00/lvol10
reserve - 6344 -6344
total 16096 8003 8093 50% - 0 -

server03
--------
#swapinfo -mat
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4096 2 4094 0% 0 - 1 /dev/vg00/lvol2
dev 12000 2 11998 0% 0 - 1 /dev/vg00/lvol10
reserve - 2991 -2991
memory 8159 4019 4140 49%
total 24255 7014 17241 29% - 0 -

In above three outputs except server2, is it display physical memory (I mean in memory row)? Then why doesn’t it display in server2?

If it not how can I found physical memory status( available, used & free) ?

Pease anyone can help me regarding this ?
Thanks
Dhananjaya Amarakoon

Re: Available physical memory

Steven E. Protter — Sun, 15 Apr 2007 04:47:34 GMT

Shalom,

Hard to tell.

Since the system is running, I'd surmise it has memory.

So some idea:
1) Problem with the swapinfo utility maybe a patch is needed.
2) swapinfo is somehow corrupt, try copying the binary from a working system.
3) Hardware issue is preventing the util from reporting.

#3 could be serious, I'd recommend using cstm/mstm or xstm to fully test the system hardare.

SEP

Re: Available physical memory

Thayanidhi — Sun, 15 Apr 2007 10:09:17 GMT

Hi,

Check the swapmemon kernel paramaeter on all the servers.

Regds
TT

Re: Available physical memory

Patrick Wallek — Sun, 15 Apr 2007 10:48:42 GMT

The 'memory' line of swpainfo has nothing to do with the amount of physical memory available in the machine. That line is displayed IF, and only IF, the swapmemon kernel parameter is set to 1. On server02, this is apparently not the case.

Re: Available physical memory

Hein van den Heuvel — Sun, 15 Apr 2007 11:30:55 GMT

Dhananjaya,

You are not the first one to want to do this, nor will you be the last.

Be sure to take advantage of previous experiences:
google: +hpux +memory +usage +site:itrc.hp.com

For a nice writeup check:

http://docs.google.com/View?
docid=dc7s6mzr_56cgsg9g

Hope this helps some,
Hein van den Heuvel (at gmail dot com)
HvdH Performance Consulting

Re: Available physical memory

Jollyjet — Mon, 16 Apr 2007 00:20:10 GMT

HI use dmesg to find the swapinfo.

Re: Available physical memory

Dhananjaya Amarakoon — Mon, 16 Apr 2007 07:39:11 GMT

As a replys, that I recevied I have found that there is not set swapmem_on=1 on server 2 kernal parameter.

So thanks to every one who spend time for my problem.

Dhananjaya