RE: System Analysis Suggestions -- MIDRANGE-L

Try doing an interactive transaction profile.

See: http://tinyurl.com/mvhouy

It's a little bit of work, but if you have a serious bottleneck it
should show up clearly.

Regards,

Scott Ingvaldson
Senior IBM Support Specialist
Midwest Region Data Center
Fiserv.

-----Original Message-----
From: Brian Piotrowski [mailto:bpiotrowski@xxxxxxxxxxxxxxx]
Sent: Monday, August 10, 2009 9:00 AM
To: Midrange Systems Technical Discussion
Subject: RE: System Analysis Suggestions

Hi Mike,

Currently, we are sitting with these values in our system status screen:
% CPU Used: 87.3%
% DB Capability: 60.9%
Jobs in system: 4460
% perm addresses: .032
% temp addresses: 2.519%
Aux storage
System ASP: 387.5G
% system ASP used: 65.8375
Total: 387.5G
Current unprotect used: 9490 M
Maximum unprotect: 9911 M

System Pools
SP Size Res. Max
1 182.38 108.87 +++++
2 1324.62 3.37 119
3 80.00 .00 10
4 830.00 .00 47
5 380.00 .16 10

Not sure if you need to know the page faults...let me know if it helps.

It is running on a P10 CPU, CPW I believe is 1000 pooled INT/BCH

Thanks!

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Mike Cunningham
Sent: Monday, August 10, 2009 9:16 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: System Analysis Suggestions

Could you give us a little more info on the specs of the 520. CPW, RAM,
disk and how you have RAM split up into pools? (WRKSYSSTS).

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Brian Piotrowski
Sent: Monday, August 10, 2009 9:05 AM
To: Midrange Systems Technical Discussion
Subject: System Analysis Suggestions

Hi All,

I'm wondering if anyone can suggest a course of action to help determine
out bottlenecks in our AS400 and a plan to improve performance?

A few years ago we upgraded to a 520-9406 machine. However, I have
noticed over the past two years that our CPU usage has slowly been
creeping up as new programs have been added. As it stands right now,
whenever I check CPU usage I hardly ever see it below 80%. Usually it
is in the 90%+ range. I know it is frustrating to our users, and I
can't blame them - I would hate to wait for jobs to finish for long
stretches at a time.

I would like to determine where the bottlenecks are occurring, and I
wonder if the group has any suggestions? Looking at the active jobs, I
suspect it may have something to do with all of the web pages that hit
the 400 on a regular basis - I see an awful lot of QZDASOINIT jobs
occupying a fair chunk of CPU usage. There are other jobs that run
regularly that consume a fair amount of usage as well.

Are there any free / built-in programs I can use to analyze the 400 to
see where and when these bottlenecks occur? I do have a HW/SW contract
on the 400, so could I have IBM come in and perform an analysis on the
system to determine our problems? I'd hate to throw a bunch of money
upgrading the main storage/DASD/CPU to P20+ if that isn't really the
problem (and I'm sure our senior management group would be less than
happy as well).

Any ideas would be most appreciated!

Thanks!

Brian.

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Brian Piotrowski
Assistant Mgr. - I.T.
Simcoe Parts Service, Inc.
Ph: 705-435-7814 x343
Fx: 705-435-6746
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
http://www.simcoeparts.com

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