RE: Performance of batch vs other batch and interactive

Here is some additional information, 
We have a model 720  with two processors 
8g memory
400g+ DASD (Running at about 70% capacity)

Each of the 10 jobs is doing it's own tasks and barely keeps up with the
Data Queue feeding it, so I don't think we can combine them into less jobs.

The 10 batch jobs are running in Subsystem pool 2 (same as the interactive
and other batch jobs)

Is this the problem? Should it be running in it's own pool with a smaller
amount of memory?



-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of darren@xxxxxxxxx
Sent: Thursday, June 03, 2004 9:40 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Re: Performance of batch vs other batch and interactive





I'll preface my advice first, with a disclaimer.  I'm a pure programmer and
not a system administrator.  That being said, I would try the following
things.  Also, you're asking for some pretty specific information without
specific information about your system.  Your fellow forum members might
have more ideas if you describe you setup a little more (# of processors,
subsystem setup, archive method, etc.)

1. If all 10 jobs are doing the same thing, then reduce the number of
running jobs.  This would probably be the most significant thing to do.
This would be especially true on a multiple processor machine, if this
applies.  10 jobs could occupy a significant portion of a 12-way processor,
while one job might only use 1 processor max.
2. I think I'd increase the jobs run time from 1000 to at least 2000 ms.
I'm guessing that the job can get more meaningful stuff done with the
greater time, and the shorter times might tend to increase the overall
overhead as the thread starts and stops.
3. Perhaps adjust the subsystems memory usage.  I'm not sure if more or
less would give you better results.
4. Can the actual process performance be improved?  If you're using
Infoprint Server to archive, make sure you aren't embedding fonts and such
in the PDF file.

> What I want is for the 10 batch jobs running in their own subsystem to
take
> the lowest priority when there is high CPU utilization caused from users
> running interactive jobs and submitting their own jobs to batch.
>
> Any suggestions?
> Thanks
> John

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