Sorry for not responding earlier.  Been rather busy.
Just to clear a few things up.  This machine does not
have the TSM server code on it.  It just has the 4.1.2
client code.  The machine has 4 CPU's.  Before starting
an incremental backup the CPUs are more that 50% idle.
When a TSM incremental starts up the CPUs are 0-5% idle.
Some of the hdisks are 100% busy and I/O wait is > 80%.
I'm not the actual admin of the machine,  just a TSM resource
who is getting posed the question and am not sure what things
to look at for high CPU utilization issues.

James

From: Steve Schaub <Steve.Schaub AT HAWORTH DOT COM>
Reply-To: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: High CPU utilization on AIX SP node with 1 gig memory
Date: Thu, 8 Feb 2001 07:17:44 -0500

Here's a shot in the dark:
We run AIX 4.3.3 as our TSM server (H50 w/1gb mem) and have run into the
following anomoly - any user who tries to bring up the admin web gui using
IE5.0 under Win4.0 workstation generates several "phantom" client sessions,
indicated by "?" when you do a Q SESS.  More than 2 of these phantoms would
drive our H50 cpu up to 100% and nail it there.  Cancelling the phantom
sessions brings things back to normal.  Uprgrading to IE5.5 fixed the
problem, but we have had scattered problems then bringing up client web
sessions.
This might not be your problem but it's worth a check.

Steve Schaub
Haworth, Inc
email: Steve.Schaub AT Haworthinc DOT com

>>> mezron AT HOTMAIL DOT COM 02/07 5:04 PM >>>
Hello,

Has anyone dealt with high CPU utilization problems on an AIX SP node?
Were you able to do anything to reduce the CPU utilization?
This happens during incremental backups.  Other less powerful (fewer
procesors) machines with less memory do not experience this issue.
Are there any commands that can be run from the AIX OS that would help
isolate this?  Can you specify that a given process can only have so much
cpu time?

Hints on how to resolve this kind of situation?

James Thompson
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