Performance keyword
You can resolve most performance problems through system tuning, which
should be handled by the WebSphere MQ for z/OS system administrator. Before following
the procedure below, use this checklist to verify that the performance problem
cannot be resolved through other means:
- Refer to Dealing with performance problems to see if you can change the way you have
designed your WebSphere MQ for z/OS subsystem and applications to improve their performance.
- Verify that the performance problem is not related to a WAIT or LOOP.
Turn to Dealing with waits and loops.
- If the problem occurred immediately after you did something a WebSphere MQ manual
told you to do, the problem might be related to the manual. Turn to Documentation keyword.
- If performance degraded after someone tuned WebSphere MQ for z/OS, verify that the
tuning options selected were appropriate. Perhaps you can resolve the problem
by choosing other options.
If you have verified that the performance problem cannot be resolved through
other means, use the following procedure:
- Record the actual performance, expected performance, and source of expected
performance criteria.
- Add PERFM to your keyword string, as shown below, and turn to Searching the IBM database.
- Free format
- 5655L8200 R600 PERFM
- Structured format
- PIDS/5655L8200 LVLS/600 PERFM
- If required, you can narrow your search by adding free-format keywords
that describe what you were doing when you experienced the performance problem.