What do our users say?
Prior to using Buffer Pool Tool at Northern Trust, we had already implemented the standard tuning recommendations we’d picked up from IDUG, i.e. isolate the catalog, separate pool for sortworks, separate pool for small heavily accessed objects… We were also making use of some Hiperpool buffers, but probably not very effectively…
Projected a cost saving from I/O elimination greater than $1,300,000 over three years by using Buffer Pool Tool. We eliminated 2,000,000 I/Os per day on one system, and 750,000 I/Os per day on a second system. We were also able to identify and correct application performance problems
Before tuning our batch workload with Buffer Pool Tool we could not get our online system up until almost 10AM. Now we have the online system back up by 4AM.
We found a major application problem during the Buffer Pool Tool trial, that was not shown as a problem from any other reporting or monitoring system. Fixing this problem recovered more than 15% of our 9021-982 processors CPU, and allowed us to cancel our processor upgrade.