From owner-freebsd-net@FreeBSD.ORG Mon Mar 8 13:22:58 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 787EA16A4CE; Mon, 8 Mar 2004 13:22:58 -0800 (PST) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.208.78.105]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5C97C43D31; Mon, 8 Mar 2004 13:22:58 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) i28LMubj052570; Mon, 8 Mar 2004 13:22:56 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost)i28LMudb052569; Mon, 8 Mar 2004 13:22:56 -0800 (PST) (envelope-from sgk) Date: Mon, 8 Mar 2004 13:22:55 -0800 From: Steve Kargl To: Brooks Davis Message-ID: <20040308212255.GA52526@troutmask.apl.washington.edu> References: <404BA723.C8141806@freebsd.org> <20040308182431.4FA6D5D08@ptavv.es.net> <20040308202210.GB485@Odin.AC.HMC.Edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040308202210.GB485@Odin.AC.HMC.Edu> User-Agent: Mutt/1.4.1i cc: David Malone cc: freebsd-net@freebsd.org cc: freebsd-current@freebsd.org cc: Andre Oppermann cc: Kevin Oberman Subject: Re: My planned work on networking stack X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Mar 2004 21:22:58 -0000 On Mon, Mar 08, 2004 at 12:22:10PM -0800, Brooks Davis wrote: > On Mon, Mar 08, 2004 at 10:24:31AM -0800, Kevin Oberman wrote: > > > > Unfortunately, SACK is often looked upon as a waste of effort to those > > who use nets in more commercial forms where aggregation of lots of small > > streams is how fat pipes are used. Research big science are about the > > only ones who have a real need for this kind of performance and it's > > growing fast. Without SACK, FreeBSD will be a non-starter for these > > purposes. > > I've got a co-worker who is part of a research group at ISI that > is doing research on long fat pipes with large streams. They are > intrested in doing a SACK implementation. I hope to have some more > information later this week. > Has anyone looked at Luigi's stuff? http://info.iet.unipi.it/~luigi/sack.html The page states that Luigi had SACK available in FreeBSD 2.1R, which was released 8 years ago. -- Steve