Date: Wed, 22 Mar 2006 13:37:22 -0800 From: "Jin Guojun [VFFS]" <g_jin@lbl.gov> To: Chris Howells <howells@kde.org> Cc: freebsd-performance@freebsd.org Subject: Re: packet drop with intel gigabit / marwell gigabit Message-ID: <4421C392.1080306@lbl.gov> In-Reply-To: <200603221932.44334.howells@kde.org> References: <20060322185241.98216.qmail@web30312.mail.mud.yahoo.com> <200603221932.44334.howells@kde.org>
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Chris Howells wrote:
>On Wednesday 22 March 2006 18:52, Arne Woerner wrote:
>
>
>
>>It is an ECS K7VMM or K7VMM+ if I recall it correctly... Bought in
>>2003...
>>
>>Is it easy to explain, why the 266FSB cannot do 8Gbit/sec without
>>problem? I mean: 2*133MHz*32bit=8.3125Gbit/sec... Is the MMU too
>>slow (e. g. due to "cheap" implementation of cache strategies) to
>>utilize the FSB to the maximum?
>>
Can be everywhere, but it is most likely in north bridge design.
>>I'd be tempted to blame the Via chipset.
>>
>>
K7VMM is an older motherboard than A7V8X, and it has
similar chipset as A7V8X. From Arne's test, it seems to have
better memory bandwidth than A7V8X.
In past, VIA designed some good chipset. It is behind others now,
but it may have other features we do not know / use.
-Jin
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