Debbie,
just as info, we have a BUFPOOLSIZE of 90000 and a cache hit of 99.09 %.
Running same MVS server as you.

Regards

Rene Lambelet, Nestle, VEVEY

>-----Original Message-----
>From:  Debbie Yoder [SMTP:dyoder AT GPU DOT COM]
>Sent:  Tuesday, October 28, 1997 11:24 PM
>To:    ADSM-L AT VM.MARIST DOT EDU
>Subject:       ADSM Database Cache Hit Percent
>
>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