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Date: Sat, 14 Jun 2003 09:18:36 +1000
From: Anton Blanchard <anton@samba.org>
To: "David S. Miller" <davem@redhat.com>
Cc: haveblue@us.ibm.com, hdierks@us.ibm.com, scott.feldman@intel.com,
   dwg@au1.ibm.com, linux-kernel@vger.kernel.org, milliner@us.ibm.com,
   ricardoz@us.ibm.com, twichell@us.ibm.com, netdev@oss.sgi.com
Subject: Re: e1000 performance hack for ppc64 (Power4)
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> Not really... one retransmit and the TCP header size grows
> due to the SACK options.

OK scratch that idea.

> I find it truly bletcherous what you're trying to do here.

I think so too, but its hard to ignore ~100Mbit/sec in performance.

> Why not instead find out if it's possible to have the e1000
> fetch the entire cache line where the first byte of the packet
> resides?  Even ancient designes like SunHME do that.

Rusty and I were wondering why the e1000 didnt do that exact thing.

Scott: is it possible to enable such a thing?

Anton