From owner-freebsd-hackers Sun Mar 14 5:35:23 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from picalon.gun.de (picalon.gun.de [194.77.0.18]) by hub.freebsd.org (Postfix) with ESMTP id E5A1314DCA for ; Sun, 14 Mar 1999 05:33:52 -0800 (PST) (envelope-from andreas@klemm.gtn.com) Received: from klemm.gtn.com (pppak04.gtn.com [194.231.123.169]) by picalon.gun.de (8.8.6/8.8.6) with ESMTP id OAA17434; Sun, 14 Mar 1999 14:33:29 +0100 (MET) Received: (from andreas@localhost) by klemm.gtn.com (8.9.2/8.9.2) id OAA01311; Sun, 14 Mar 1999 14:24:38 +0100 (CET) (envelope-from andreas) Date: Sun, 14 Mar 1999 14:24:37 +0100 From: Andreas Klemm To: Rob Snow Cc: Amancio Hasty , Cory Kempf , Bill Paul , freebsd-hackers@FreeBSD.ORG Subject: Re: Gigabit ethernet -- what am I doing wrong? Message-ID: <19990314142436.A1292@titan.klemm.gtn.com> References: <001b01be6e10$08061120$03e48486@dympna.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <001b01be6e10$08061120$03e48486@dympna.com>; from Rob Snow on Sun, Mar 14, 1999 at 05:44:28AM -0600 X-Operating-System: FreeBSD 3.1-STABLE SMP X-Disclaimer: A free society is one where it is safe to be unpopular Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Mar 14, 1999 at 05:44:28AM -0600, Rob Snow wrote: > I'm looking at this wondering a couple of things. How many mem copies take > place in the IP stack before we're ready to transmit a frame? My question > is based around whether it's the NIC's or the IP stacks and PCI holding us > back. What would PCI-64@66 do for us with current stacks? AFAIK "zero copy tcp/ip" went into 3.1 and 4.0. Thanks to David Greenman who implemented and tested this on ftp.cdrom.com. (I hope I got the credits right ;-) -- Andreas Klemm http://www.FreeBSD.ORG/~andreas What gives you 90% more speed, for example, in kernel compilation ? http://www.FreeBSD.ORG/~fsmp/SMP/akgraph-a/graph1.html "NT = Not Today" (Maggie Biggs) ``powered by FreeBSD SMP'' To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message