RE: Using OS/400 AutoTuner

["Graap, Ken" <keg@xxxxxxxxxxxxxxxxxx>]

Pete wrote...

>You have several problems with your configuration, not the least of which 
>is that you are apparently running controlling subsystem QBASE. 

I'm not running QBASE.... I am and always have run QCTL as my controlling
subsystem.

> segregate your jobs according the type of work they do ...

I have segregated my jobs. Interactive jobs run in the *INTERACT pool and
QBATCH jobs run in *SHRPOOL1.
Subsystem monitor jobs and system server jobs run in *BASE. Print Spoolers
run in pool *SPOOL

>my guess is that you have some CPU intensive jobs that are eating machine
>cycles for their entire timeslice and then coming back for more

Total CPU averages less that 20% on my 730 8 way system. Interactive is only
using 5% CPU on average.
During these periodic slowdowns CPU utilization remains low and disk arm
utilization remains low.

I believe that I might have a seize/lock issue and I'm exploring that
possibility now by running Performance Monitor system traces and waiting for
slowdown events to occur. I've been able to capture some data and have
notice a few lock conflicts, but it doesn't look pervasive enough to result
in a tripling of host response times for all 200+ interactive users of the
system. 

Thank you for you thoughts though.

Kenneth

****************************************
Kenneth E. Graap
IBM Certified Specialist
AS/400 Professional
Network Administrator
NW Natural (Gas Services)
keg@nwnatural.com
Phone: 503-226-4211 x5537
FAX:    603-849-0591
****************************************






-----Original Message-----
From: Pete Hall [mailto:pbhall@execpc.com]
Sent: Monday, May 22, 2000 6:25 PM
To: MIDRANGE-L@midrange.com
Subject: Re: Using OS/400 AutoTuner
+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---