Reporting performance problems

Recommended documentation

Record of the unexpected performance
Record of performance under another level of SMP/E

Follow this procedure to gather the recommended documentation and report the problem.

Note: You should measure and discuss performance in terms of EXCP counts and CPU time rather than wall-clock time, which can be affected by conditions outside the control of SMP/E.

Check to see whether any programs that do a lot of I/O operations, such as Information Management System (IMS™), were running when you noticed the degraded performance.
Check to see whether you installed any engineering changes or service to SMP/E or other products that may have degraded system performance.
If the problem does not seem to be caused by another program or an engineering change, rerun the job under your current level of SMP/E.
Run the same job under a previous PTF level or release of SMP/E to demonstrate a difference in performance. Use the same environment, including the same operating system and DASD configuration.
If there is a difference in performance, report the problem to the IBM® Support Center.
After asking for your account name, license number, and other customer identification, the service representative will ask for a brief description of the problem.