topic Re: Application using memory? in Operating System - HP-UX

Application using memory?

Ronelle van Niekerk — Wed, 11 Feb 2004 20:50:26 GMT

I upgraded a server from 11.00 to 11i over the weekend that has fallen over twice since.

I've done some investigating and have found that when 2 of the in-house applications are started, top shows the free memory fall from 35000 to 15000 and then it slowly but surely gets lower and lower until (I think) the KEON security application craps itself and I can't connect to the box anymore.

This server is virtually identical to another server I upgraded the weekend before (aside from hostname, ip address and location) and the other server is doing fine.

I don't know what's going on.
Any ideas?

Re: Application using memory?

Patrick Wallek — Wed, 11 Feb 2004 22:05:01 GMT

Check your kernel parameters.

If the 2 boxes do similar work, compare the configurable kernel parameters and see what's different.

Re: Application using memory?

Ronelle van Niekerk — Wed, 11 Feb 2004 22:12:20 GMT

Part of the upgrade was changing the kernel parametres so they've both been changed to the same values.

Re: Application using memory?

T G Manikandan — Wed, 11 Feb 2004 22:17:40 GMT

you can compare the patch bundles on both the machines
compare the kernel parameters.

Just do a
#UNIX95= ps -e -o ruser,pid,vsz=Kbytes|more

find out which processes consume more amount of memory.

Re: Application using memory?

Ronelle van Niekerk — Wed, 11 Feb 2004 22:23:44 GMT

Patch bundles are also exactly the same - both having justbeen upgraded.

Did a #UNIX95= ps -e -o ruser,pid,vsz=Kbytes|more earlier and the results are weird.
On the server that is working, the specific processes that the application starts are using more memory than on the "broken" server.

Re: Application using memory?

T G Manikandan — Wed, 11 Feb 2004 22:53:16 GMT

Are they identical servers?
What applications are hosted?is there any variation in the application 32/64 bit

Re: Application using memory?

Ronelle van Niekerk — Thu, 12 Feb 2004 15:10:50 GMT

They are 99% identical:
Same hardware, same applications - even the same volume group and lvol setup.
As I said, the only real difference is the localtion, hostname and IP address - other than that they are interchangeable.

After playing around - stopping and starting the applications a few times yesterday, the memory seems to be stabilised and the apps are running fine.