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

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Message-ID: <20080105154805.118eb3d1@vader.jdub.homelinux.org>
Date:	Sat, 5 Jan 2008 15:48:05 -0600
From:	Josh Boyer <jwboyer@...il.com>
To:	benh@...nel.crashing.org
Cc:	Stefan Roese <sr@...x.de>, netdev@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: [PATCH] ibm_newemac: Increase number of default rx-/tx-buffers

On Sun, 06 Jan 2008 07:53:06 +1100
Benjamin Herrenschmidt <benh@...nel.crashing.org> wrote:

> 
> 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) ?

No need for a defconfig update patch.  Paul or I usually do a general
defconfig update for most boards before the next kernel version.  This
will get picked up then.

josh
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