We have a BUFPoolsize =32768 on an MVS V2.1.010 with a 18gig database.  The
cache hit percentage stays around 98.4%.
James.Sporer AT doit.wisc DOT edu

_________________________Reply Header_________________________
Author: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> 
Subject: Re: ADSM Database Cache Hit Percent 
10-29-97 04:29 PM

Hi Koen,Debbie,

Our server is MVS V2.1.013 and DB size = 1072Meg
BUFPoolsize = 8192K
Cache Hit Percentage = 99.30%

Has anyone got a clear understanding as to how this 
percentage is calculated?

Thanks 
Christo Heuër
ABSA Group 
Johannesburg
South Africa
E-Mail: christoh AT absa.co DOT za

> Hi Debbie, you're not alone, we also have 2 servers with a bufpoolsize of
> 30720K with a cache hit of 97,59 and 93,08 after a week running. They
have
> databases of 4100M and 7000M. I stopped adding bufpoolsize since the gain
> in cachehit% was minimal, as you pointed out memorysize increases and i
was
> stil inside my backupwindow. To the other persons reacting on this topic
,
> could you please also give your databasesize (just the bufpoolsize is
> meaningles).
> Whit a bufpoolsize of 100k and a database of 1M (bufpool is 10% of
> database) you're cachehit% is a lot better than the same bufpoolsize with
a
> database of 100M (bufpoolsize is 0,1% of database)
> Greetings, Koen.