Buffer Pool Performance

Since this is only one of several pools, the paging indicates that the processor needs more memory to support the current pool allocations, and the total memory requirements for the DBM1 address space.

Hitting the VDWQT is good, and with a low to zero value for DWQT. This kind of ratio is optimal.

Synch Reads Sequential, (since this a rather high number) ‘may’ indicate pool thrashing – but the rest of the pool statistics are necessary to determine if this is true or not. Thrashing may happen when the processor is very busy and low priority batch jobs use Seq. Pref – the pages are read into the pool, and fall off the LRU queue before the batch job can be dispatched to process the data pages. They are then re-read using Synch I/O.