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Hi Dennis

I guess the idea is to identify which jobs are consuming the most CPU%. First and easiest - be there at te time and sit in front of WRKACTJOB and either F5 or F10 periodically - put your cursor on the CPU % column and press F16, so that the highest CPU % is at the top.

Or put WRKACTJOB OUTPUT(*PRINT) in appropriate combinations of reset and not rest in a CL - loop with delay, say every 3 minutes. See what you see.

Or if you have Performance Tools, run a collection at that time and look at the relevant reports.

Or look at the QHST* files for that time period. You want the CPF1164 messages, because they have have message data for CPU time and elapsed time. Divide the former by the latter to get CPU% - do this for jobs running during that time period. This information is not viewable with the DSPLOG command - you have to read the QHST* file directly - more info in message handling chapter of CL Programming or in Work Management, IIRC.

Hope this helps - good luck!
Vern

At 05:22 AM 11/9/2006, you wrote:

Hello, All:

One of the iSeries systems in our configuration usually has relatively
low (30-50%) utilization during the early morning.  However, recently we
have had daily occurrences of near 100% utilization (sustained for about
30-45 minutes) at between 5AM and 6AM.  We strongly suspect that this is
the result of some query being issued by a scheduled job on some other
server.  We would like to identify either the job or (Ideally) the SQL
statements that are being executed under these circumstances.

This is causing an impact to that system's ability to quickly process
data coming from MQ during that time period, which is a very bad thing
in this case.

Can any of you give some idea what we might do to identify the job or
user, and potentially the exact statement that is causing this
performance hit?  Or maybe some other information I need to provide in
order to arrive at an answer?

Thank you,

Dennis E. Lovelady
Accenture



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