Re: SuperMicro P54VL-PCI Motherboard and NCR53c810 PCI SCSI card

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#27

From: Leonard N. Zubkoff
Date: Mon, 04 Dec 1995 17:38

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In article <49v829$i7i@canyon.sr.hp.com> darrylo@sr.hp.com (Darryl Okahata) writes:

  Leonard N. Zubkoff (lnz@dandelion.com) wrote:

  > Also, if you do use a PCI SCSI card, expect peak SCSI performance to be
  > less than half what a Triton board is capable of.

       Care to explain this?  You're the first person I've seen
  complaining about PCI-based SCSI controllers.

I am only complaining about PCI SCSI performance on the OPTi combined
VL/PCI Pentium motherboards (you omitted that part in your excerpt).  It is
a reasonably well known fact that the PCI implementation on these boards is
a poor performer; I'm merely quantifying this data further.  I have
compared identical system configurations where the only change was the
replacement of an OPTi VL/PCI chipset motherboard with an Intel Triton one,
and sustained SCSI hard drive performance went from a measured < 3 MB/sec
to over 7MB/sec.

		Leonard

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References: <ASARY.95Dec3003706@elaine41.Stanford.EDU> <49strk$1s3@kelewan.dandelion.com> <49v829$i7i@canyon.sr.hp.com>

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Path: arc1-ca.pugleaf.net!dandelion.com!not-for-mail
From: "Leonard N. Zubkoff" <lnz@dandelion.com>
Newsgroups: comp.os.linux.misc,comp.os.linux.hardware,comp.periphs.scsi,alt.uu.comp.os.linux.questions
Subject: Re: SuperMicro P54VL-PCI Motherboard and NCR53c810 PCI SCSI card
Followup-To: comp.os.linux.misc,comp.os.linux.hardware,comp.periphs.scsi,alt.uu.comp.os.linux.questions
Date: 4 Dec 1995 09:38:50 -0800
Organization: Dandelion Digital
Sender: lnz@dandelion.com
Distribution: world
Message-ID: <49vbna$7nn@kelewan.dandelion.com>
References: <ASARY.95Dec3003706@elaine41.Stanford.EDU> <49strk$1s3@kelewan.dandelion.com> <49v829$i7i@canyon.sr.hp.com>
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In-reply-to: darrylo@sr.hp.com's message of 4 Dec 1995 16:36:25 GMT

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