Message manager data records
The message manager is the component of WebSphere MQ that processes all API requests. The format of the message manager accounting records is described in assembler macro thlqual.SCSQMACS(CSQDQMAC).
The QMAC data gives you information about the CPU time spent processing WebSphere MQ calls, and counts of the number of MQPUT and MQGET requests for messages of different sizes.