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From: "David S. Miller" <davem@redhat.com>
To: anton@samba.org
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)
Date: Fri, 13 Jun 2003 15:46:34 -0700 (PDT)	[thread overview]
Message-ID: <20030613.154634.74748085.davem@redhat.com> (raw)
In-Reply-To: <20030613223841.GB32097@krispykreme>

   From: Anton Blanchard <anton@samba.org>
   Date: Sat, 14 Jun 2003 08:38:41 +1000
   
   This is only worth it if most packets will have the same sized header.
   Networking guys: is this a valid assumption?

Not really... one retransmit and the TCP header size grows
due to the SACK options.

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

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.

  reply	other threads:[~2003-06-13 22:36 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-13 15:17 e1000 performance hack for ppc64 (Power4) Herman Dierks
2003-06-13 16:21 ` Dave Hansen
2003-06-13 22:38   ` Anton Blanchard
2003-06-13 22:46     ` David S. Miller [this message]
2003-06-13 23:18       ` Anton Blanchard
2003-06-14  1:52         ` Lincoln Dale
2003-06-14  5:41           ` David S. Miller
2003-06-14  5:52             ` Lincoln Dale
2003-06-14  6:08               ` David S. Miller
2003-06-14  6:14                 ` David S. Miller
2003-06-14  6:27                   ` William Lee Irwin III
2003-06-14 17:08                   ` Greg KH
2003-06-14 17:19                     ` Greg KH
2003-06-14 17:21                     ` Riley Williams
2003-06-15  3:01                     ` David S. Miller
2003-06-14  5:16       ` Nivedita Singhvi
2003-06-14  5:36         ` David S. Miller
  -- strict thread matches above, loose matches on Subject: below --
2003-06-16 18:56 Feldman, Scott
2003-06-16 18:21 Feldman, Scott
2003-06-16 18:30 ` Dave Hansen
2003-06-15 14:40 Herman Dierks
2003-06-15 14:44 ` David S. Miller
2003-06-16 16:17 ` Nivedita Singhvi
2003-06-15 14:32 Herman Dierks
2003-06-13 23:52 Feldman, Scott
2003-06-13 23:52 ` David S. Miller
2003-06-14  0:55   ` Anton Blanchard
2003-06-14  1:34     ` David S. Miller
2003-06-14  0:03 ` Anton Blanchard
2003-06-13 22:13 Feldman, Scott
2003-06-13 17:03 Herman Dierks
2003-06-13  1:16 Feldman, Scott
2003-06-13 23:15 ` Anton Blanchard
2003-06-12  3:32 David Gibson

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