RE: Running batch jobs in Qinter

[Jeff Bull <Jeff.Bull@xxxxxxxxxxxxxxx>]

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


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