Re: Performance Issues on 570

> I appreciate your candor Joe.  I'm starting to
> suspect something along the same lines.  When the
> Rochester folks starting pointing at our
applications
> (which haven't changed), I know they are grasping at

> straws.

In every case that I'm familiar with, an increase in
CPW has translated to an increase in performance, so
the situation you're describing is an anomoly.

With respect to your nighly billing run specifically,
which went from 4 hours to nearly 9 hours, the
question that comes to mind is the amount of CPU time
consumed vs. the elapsed runtime.  If CPU time
consumed were a small fraction of elapsed runtime,
that may be a clue to the bottleneck.

Another question would be whether either or both of
your partitians allocate a fraction of a CPU to the
partition, which may cause long running jobs to be
swapped in and out of the CPU on a regular basis, and
a clearing of CPU cache, and lead to performance
problems.

Nathan Andelin.



                
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