netdev - Re: [PATCH] ibm_newemac: Increase number of default rx-/tx-buffers

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Message-Id: <1199566386.7291.58.camel@pasglop>
Date:	Sun, 06 Jan 2008 07:53:06 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Stefan Roese <sr@...x.de>
Cc:	netdev@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH] ibm_newemac: Increase number of default rx-/tx-buffers


On Sat, 2008-01-05 at 13:38 +0100, Stefan Roese wrote:
> On Saturday 05 January 2008, Benjamin Herrenschmidt wrote:
> > On Sat, 2008-01-05 at 10:50 +0100, Stefan Roese wrote:
> > > Performance tests done by AMCC have shown that 256 buffer increase the
> > > performance of the Linux EMAC driver. So let's update the default
> > > values to match this setup.
> > >
> > > Signed-off-by: Stefan Roese <sr@...x.de>
> > > ---
> >
> > Do we have the numbers ? Did they also measure latency ?
> 
> I hoped this question would not come. ;) No, unfortunately I don't have any 
> numbers. Just the recommendation from AMCC to always use 256 buffers.

Ok. Well, it's just a .config option so I suppose the patch is fine. Can
you also update the defconfigs (at least for the recent AMCC boards) ?

Ben.


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