As PMR came in asking for the best practice for WLM definitions for MQ and CHINIT address spaces
As an MQ performance person, we suggest that the WLM priorities are
1) DB2 MSTR high
2) MQ MSTR
3) High importance CICS and CHIN
4) Other CICS
5) Other work
The MQ MSTR needs to be above CICS because MQ has internal tasks that need to run at high priority to do queue clean up and keep the performance good.
MQ shared queue uses DB2 services, so we need to make sure that DB2 is higher than or equal to MQ.
The chin is not so critical. Some customers have MQ MSTR and CHIN at the same priority, others have CHIN in the same service class with the CICS