Bufpoolsize should be set between 1/2 and 1/8 of the among of the total 
physical memory, if I remember well, that is, what best practices recommend.
Also if you modify this parameter you will have to take a look at the 
percentage hit cache (q db f=d) that can be increase (modifying the 
bufpolsize), or perhaps decrease if the setting is incorrect. 
Percentage hit cache must be above 99 %.

I will also recommend to take a look at the performance tuning guide, that will 
let you know more about many settings that can increase the performance of your 
TSM server.

Regards,
Bernaldo.



----- Mensaje original ----
De: Paul Dudley <pdudley AT ANL.COM DOT AU>
Para: ADSM-L AT VM.MARIST DOT EDU
Enviado: viernes, 4 de abril, 2008 5:44:02
Asunto: Re: [ADSM-L] Improving TSM performance - memory related setting

Currently the BUFPOOLSIZE is set to:

BufPoolSize: 122,880 K

The server has 3 Gb of memory. Is this something I can increase?

Regards
Paul Dudley

Senior IT Systems Administrator
ANL IT Operations Dept.
ANL Container Line
pdudley AT anl.com DOT au
03-9257-0603
http://www.anl.com.au



> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> Behalf Of Skylar Thompson
> Sent: Friday, 4 April 2008 1:05 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Improving TSM performance - memory related
setting
>
> Paul Dudley wrote:
> > If I recall correctly there is a TSM system setting that relates to
the
> > memory available on the server, and you can check and adjust this
> > setting to improve performance of your TSM server.
> >
> >
> >
> > Can anyone remind me which setting it is?
> >
> >
>
> Are you thinking of BUFPOOLSIZE and LOGPOOLSIZE? The former controls
> the
> size of the database buffer pool (bounded only by the physical memory
of
> the machine), and the latter the size of the temporary transaction
space
> in the recovery log (up to 8192 pages IIRC).
>
> --
> -- Skylar Thompson (skylar2 AT u.washington DOT edu)
> -- Genome Sciences Department, System Administrator
> -- Foege Building S048, (206)-685-7354
> -- University of Washington School of Medicine





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