Re: Slower MS SQL server

Thomas Kernen ( tkernen@deckpoint.ch )
Mon, 08 Dec 1997 12:00:54 +0100

currently 300 users, server running NT 4.0 sp3 + MS SQL 6.5 + RadiusNT.
HP PPro 200Mhz with 128 MB RAM + 2x 3.2 GB SCSI II HD's.

Pagefile set to 160MB, max 280Mb
Memory allocated to SQL 40 MB, if more (ex: 60 MB) then slowdown.

Rebooted twice since memory installed.

Thomas

Mitch Wagers wrote:
>
> NT uses a pagefile no matter how much RAM you have...
> How much traffic goes across the SQL? Users, etc...
>
> At 11:29 AM 12/8/97 +0100, you wrote:
> >Hmmm.. okay.. the machine is rebooting... but seems wired since my
> >server isn't evewn using all the ram.
> >
> >What about the memory allocated to the SQL server.. how much sould that
> >be?
> >
> >Thomas
> >
> >Mitch Wagers wrote:
> >>
> >> ARgh...your pagefile needs to be 30-45% MORE than your RAM amount on
> >> anything over 96mb. Anything under 96mb needs to be 20-30% more.
> >> So, set your pagefile to 160mb, maximum to 280mb, then reboot. This is most
> >> likely your problem, a pagefile smaller than your RAM amount creates
> >> excessive swapping.
> >>
> >> At 10:31 AM 12/8/97 +0100, you wrote:
> >> >SQL server assigned 48 MB right now.. if we add more it slows down the
> >> >machine.
> >> >
> >> >The pagefile is 75MB inital upto 128 MB.
> >> >
> >> >Thomas
> >> >
> >> >Dale E. Reed Jr. wrote:
> >> >>
> >> >> On Mon, 8 Dec 1997, Thomas Kernen wrote:
> >> >>
> >> >> > Hello,
> >> >> >
> >> >> > since we upgraded our HP PPro 200 Mhz MS SQL server from 64 to 128 MB
> >> >> > RAM and assigned the extra ram to the SQL server the response time seems
> >> >> > slower. Any ideas why?
> >> >>
> >> >> But how much ram did you assign? Assigning too much can cause
> >> >> excessive paging.
> >> >>
> >> >> Also notice that some intel machines has memory issues where they
> >> >> can actually slow down after 64mb of memory, although if I remember
> >> >> right the PPro should fix that.
> >> >>
> >> >> Dale E. Reed Jr. (daler@iea.com)
> >> >> _________________________________________________________________
> >> >> IEA Software, Inc. | RadiusNT, Emerald, and NT FAQs
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