RE: Running batch jobs in Qinter -- MIDRANGE-L

Submitting to the QCTL job queue - ?@*%$� that's a hanging offence.  Using
object authorities on the QCTL jobq should be sufficient to prevent that,
and it would probably work well on other job queues as well.  You would need
to research well up front to make sure that all user profiles with valid
reasons for using the job queues had access, including overnight and other
automated procedures.

Jeff Bull

-----Original Message-----
From: Mike.Barton@pinkroccade.co.uk
[mailto:Mike.Barton@pinkroccade.co.uk]
Sent: 12 December 2002 16:17
To: midrange-l@midrange.com
Subject: RE: Running batch jobs in Qinter





>Original reply:
>
>Try holding jobq QINTER
>
>This works for a while until they notice.
>
>Another option is to change the class .
>By using  a class with a much higher priority (numerically that is)
>- say 99 , any advantage is lost.
>
>HTH
>
>Jeff's reply:
>
>This is not strictly true.  Unless the system CPU is running at close to
>100%, a batch job is still going to get sufficient cpu cycles to cause
>damage performance - this is done by the batch job over-storing the memory
>pages of the interactive jobs.  The priority value of '99' is only relative
>to other jobs in the system, it is therefore likely that 51 (for example)
>would have the same effect.
>
>Running batch jobs in the same subsystem is not actually the problem, it is
>when they run in the same memory pool as interactive jobs that the problems
>can occur.  Since most commonly subsystems only have one pool defined ...
>
>IBM have always recommended, for as far as I can remember, NOT to mix job
>types in the same memory pool.
>
>Jeff bull


Jeff
agreed in that it depends what operating system level u r at.
The latest releases don't 'obey' the level any where near as much as
they used to.

Mike

Removing the QINTER jobq from QINTER subsystem  is a good idea
but as previously suggested, you apear to allow the users to do too much.

They would onl find another jobq to use instead - even QCTL !





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