netdev - Re: [PATCH 1/2] pcnet32: only allocate init

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Message-ID: <20070307145008.GB22467@csclub.uwaterloo.ca>
Date:	Wed, 7 Mar 2007 09:50:08 -0500
From:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
To:	"Michael K. Edwards" <medwards.linux@...il.com>
Cc:	Ralf Baechle <ralf@...ux-mips.org>, Don Fry <pcnet32@...izon.net>,
	jgarzik@...ox.com, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] pcnet32: only allocate init_block dma consistent

On Tue, Mar 06, 2007 at 07:39:21PM -0800, Michael K. Edwards wrote:
> On 3/6/07, Ralf Baechle <ralf@...ux-mips.org> wrote:
> >This small change btw. delivers about ~ 3% extra performance on a very
> >slow test system.
> 
> Has this change been tested / benchmarked under VMWare?  pcnet32 is
> the (default?) virtual device presented by VMWare Workstation, and
> that's probably a large fraction of its use in the field these days.
> But then Don probably already knows that.  :-)

Unless you install vmware tools in which case you use vmxnet instead
which of course performs better since it knows it isn't talking to real
hardware.

I am currently about to try what this patch does to the performance of
our system (266MHz Geode SC1200 with 4 pcnet32's).

--
Len Sorensen
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