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Message-ID: <233C89823A37714D95B1A891DE3BCE5202AB1893@xch-a.win.zambeel.com>
From: Manish Lachwani <manish@Zambeel.com>
To: "'Craig Whitmore'" <linuxkernel@orcon.net.nz>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Dave Jones <davej@codemonkey.org.uk>
Cc: Martin Knoblauch <knobi@knobisoft.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: RE: Memory performance on Serverworks GC-LE based system poor?
Date: Sun, 10 Nov 2002 17:37:37 -0800
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I, too get 1600 using the Force 4203 motherboard with GC-LE chipset. Same
CPU and RAM ...

Thanks
Manish

-----Original Message-----
From: Craig Whitmore [mailto:linuxkernel@orcon.net.nz]
Sent: Sunday, November 10, 2002 5:23 PM
To: Alan Cox; Dave Jones
Cc: Martin Knoblauch; Linux Kernel Mailing List
Subject: Re: Memory performance on Serverworks GC-LE based system poor?


I get 1600 on a similar machine but with a Intel SHG2 motherboard
(ServerWorks GC LE Chipset as well) (Same RAM + Processors)
Maybe not a very good Motherboard you have?

Thanks
Craig

> >
> >  >  I have experienced extreme low STREAMS numbers (about 600 MB/sec for
Triad)
> >  > on two dual CPU systems based on the ServerWorks GC-LE chipset
(SuperMicro
> >  > P4DLR+ mainboard). Both systems had 2x2.4 GHz XEONs, 4GB of DDR
memory and
> >  > were running kernel 2.4.18. I would usually expect STREAMS numbers of
about
> >  > 2000 MB/sec for this kind of systems.
> >  >
> >  > Does this ring any bells?
> >
> > ISTR serverworks LE errata with MTRRs and write-combining.
> > Whether this is biting you or not I can't say.
>
> Write combining would really only bite graphics cards. The only other
> performance errata I know about affects the CIOB20 earlier revisions
> (vendor serverworks id 0x0006)

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