Matching CICS performance parameters to service policies

Ensure that the CICS® performance parameters are compatible with the workload manager service policies used for the CICS workload.

In general, define CICS performance objectives to the MVS™ workload manager first and observe the effect on CICS performance. When the MVS workload manager definitions are working correctly, then consider tuning the CICS parameters to further enhance CICS performance. However, use CICS performance parameters as little as possible.

Consider using these performance attributes:
  • Transaction priority, passed on dynamic transaction routing. The priority assigned by the CICS dispatcher must be compatible with the task priority that is defined to MVS workload manager.
  • Maximum number of concurrent user tasks for the CICS region.
  • Maximum number of concurrent tasks in each transaction class.