For years I have been complaining about the log manager data – the checkpoint count (QJSTLLCP) only included the number of times the LOGLOAD limit defined as a queue manager attribute had been reached. It did not include, nor was there any way to tell from the SMF data, the checkpoints that were as a result of log switches.
Well that has changed in V9, and it is not documented (yet). The QJSTLLCP is now a count of all checkpoints. I found this by accident when processing SMF data from a test using very small log files.
This will be documented in Part 2 of “Using the data from MQSMFCSV,” which I hope to get published in the next month. In the meantime the MQ Log manager data showing this change looks like this: