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05100 - Page Faults - Anyway to reduce SAP Storage to Reduce Page Faults
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Page Faults - Anyway to reduce SAP Storage to Reduce Page Faults
I just bounced SAP this weekend so I will send a screen shot of ST02mid week. Is there a way to attach files to these messages? Also, I
updated my original message with a few more items, values of the max
active, active-ineligible, Not sure how all of that comes into play
with page faults.
--- In SAP on System iZy..., "Gueldenpfennig, Volker"
<volker.gueldenpfennigZs...> wrote:
> Hi,
>
> the amount of memory depends on the usage of the DB-server. Do you
run
> workload on the DB-server or don't you run workload at all there ?
> Normally a bit oversized buffers or EM don't increase the page-
faults as
> this is then not used as well and paged out.
>
> Could you send over a screenshot of ST02 on the DB-server after a
few days
> running ?
>
> Regards
>
> Volker
>
> > -----Original Message-----
> > From: bfbray [mailto:blakebrayZp...]
> > Sent: Montag, 18. Februar 2002 17:06
> > To: SAP on System iZy...
> > Subject: Page Faults - Anyway to reduce SAP
Storage to
> > Reduce Page Faults
> >
> >
> > Our DB Server is a 9406-730 with 13gig memory. We have all users
> > logging on to two app servers, we try not to have any users on
the DB
> > server. Our DB server 3 memory pools, *Machine=1gig,
*base=11.9gig,
> > *spool=.1gig. We basically have 12gig in *BASE which runs SAP.
Our
> > Non-DB page faults average 200-400 per second (via wrksyssts) and
> > will sometimes peak 1000-2000 per second. I've read in various
notes
> > and manuals that the SAP memory definitions such as Program
Buffer,
> > Paging Area, Extended Memory, Number of WP's do not affect System
> > Performance. Is this a true or did I just misunderstand what I've
> > seen? Are there SAP buffers or other setting which I may have
> > oversized and is causing the high Non-DB page faults? The sizing
> > tools we've used indicates 12gig should enough. Before we go and
> > purchase more memory we'd like to know if something can be
cahnged to
> > reduce the amount of memory we are currently using. How much
memory
> > are others running on the DB server?
> >
> >
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