From owner-freebsd-hardware  Fri Jun  6 15:22:39 1997
Return-Path: <owner-hardware>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id PAA15869
          for hardware-outgoing; Fri, 6 Jun 1997 15:22:39 -0700 (PDT)
Received: from sparkie.gnofn.org (sparkie.gnofn.org [206.27.168.35])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id PAA15863
          for <hardware@FreeBSD.ORG>; Fri, 6 Jun 1997 15:22:32 -0700 (PDT)
Received: from sparkie.gnofn.org (sparkie.gnofn.org [206.27.168.35]) by sparkie.gnofn.org (8.7.Beta.10/8.7.Beta.10) with SMTP id RAA01210 for <hardware@FreeBSD.ORG>; Fri, 6 Jun 1997 17:22:17 -0500 (CDT)
Date: Fri, 6 Jun 1997 17:22:17 -0500 (CDT)
From: Craig Johnston <craig@gnofn.org>
To: hardware@FreeBSD.ORG
Subject: Re: poor memory bandwidth on ABIT IT5H rev 1.5
In-Reply-To: <Pine.GSO.3.95.970606163225.26412A-100000@sparkie.gnofn.org>
Message-ID: <Pine.GSO.3.95.970606172035.906A-100000@sparkie.gnofn.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-hardware@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk



On Fri, 6 Jun 1997, Craig Johnston wrote:

> 
> Interesting --
> 
> 2.2.2 on the ABIT with an AMD K5-PR166 gives a result of 
> 60 megs/sec maximum via the naive memory bandwidth benchmark:
> dd if=/dev/zero of=/dev/null bs=1m count=100
> 
> while 2.2.2 on an Asus mobo (the HX one, t2p4? or something?)
> gives 86 meg/sec by the same benchmark.

Having to follow myself up because I was an idiot.  The Asus
board has an AMD K5-PR133, the ABIT a PR-166.

So the slower cpu is on the board with the better performance
to main memory.  Could the 1.5 vs 1.75 multiplier for 133/166
respecitively be an issue?  

-Craig