Performance event statistics

The event data in the event message contains information about the event for system management programs. For all performance events, the event data contains the names of the queue manager and the queue associated with the event. Also, the event data contains statistics related to the event. We can use these statistics to analyze the behavior of a specified queue. Table 4 summarizes the event statistics. All the statistics refer to what has happened since the last time the statistics were reset.

Table 4. Performance event statistics

Parameter	Description
TimeSinceReset	The elapsed time since the statistics were last reset.
HighQDepth	The maximum number of messages on the queue since the statistics were last reset.
MsgEnqCount	The number of messages enqueued (the number of MQPUT calls to the queue), since the statistics were last reset.
MsgDeqCount	The number of messages dequeued (the number of MQGET calls to the queue), since the statistics were last reset.

Performance event statistics are reset when any of the following occur:

• A performance event occurs (statistics are reset on all active queue managers).

• A queue manager stops and restarts.

• On z/OS only, the RESET QSTATS command is issued at the console.

• The PCF command, Reset Queue Statistics, is issued from an application program.