Hello Everyone,

We are trying to increase our ADSM database cache hit percent. Our ADSM
previously was running with a cache hit percent of only 83.44%. This
percent was based upon a BUFPOOLSIZE number of 10240K. We increased the
BUFPOOLSIZE number (in 11 increments of 1024K) to a current value of
21504K. This new value still only is giving us a cache hit percent of
around 96.13%.

I attended 2 sessions at the IBM International Storage Symposium in August,
and they said to shoot for a cache hit percent of 98 or 99%. Is there any
kind of max limit to the BUFPOOLSIZE specified? or should we just keep
increasing it until we reach 98 or 99%? (we realize that a trade-off is
server memory).

We are running ADSM MVS server level 2.1.0.13.
Any/all help will be greatly welcomed and appreciated.

Debbie Yoder
GPU Energy