Re: more processors = increased runtime ?

["Jim Franz" <franz400@xxxxxxxxxxxx>]

>...and both run in the base pool.

any dynamic pool adjustment? syval qpfradj ? (on "A" and not "B")
any file contention or sharing on sys "B".

jim

----- Original Message -----
From: <NigsRpgId@aol.com>
To: <midrange-l@midrange.com>
Sent: Tuesday, January 15, 2002 10:55 AM
Subject: more processors = increased runtime ?


> --
> [ Picked text/plain from multipart/alternative ]
>
> Hi,  I have a situation where a particular part of an overnight process is
> taking much longer to run on a more powerful system, and wondered if
anyone
> might offer any suggestions as to why this may happen.  The remaining
parts
> of the process are running more or less the same length of time, or
slightly
> better.
>
> For one program that is called within the process, the elapsed run time is
> 1.5hrs on System A whereas it is 8.0 hrs on System B.
>
> In both cases the job is run overnight when there is not much other
activity
> on the system. The job has been run several times with the same results,
on
> each system.
>
> System A is a 4-way system, system B is a 12-way system. Both are on the
same
> version of OS/400 with the same CUM PTF's applied. The subsystem
descriptions
> should be similar and both run in the base pool.
>
> I am waiting to hear if SMP is installed on either/both (DB2 Symmetric
> multiprocessing), but since it is an RPGLE program, I don't think this
will
> make a difference anyway.
>
> The program is performing input-primary processing on a join logical based
on
> three physical files. There is one format in the join logical. There are
11
> million records in each of two of the joined files, and around 100,000 in
the
> other. The data has been restored from one system to the other so it is
> identical.
>
> Any ideas ??
>
> Thanks in advance!
>
> Nigel
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