From owner-freebsd-hackers Tue Sep 3 13:32:32 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id NAA23696 for hackers-outgoing; Tue, 3 Sep 1996 13:32:32 -0700 (PDT) Received: from FileServ1.MI.Uni-Koeln.DE (FileServ1.MI.Uni-Koeln.DE [134.95.212.1]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id NAA23688; Tue, 3 Sep 1996 13:32:18 -0700 (PDT) Received: from x14.mi.uni-koeln.de (annexr2-46.slip.Uni-Koeln.DE) by FileServ1.MI.Uni-Koeln.DE with SMTP id AA21208 (5.67b/IDA-1.5); Tue, 3 Sep 1996 22:32:08 +0200 Received: (from se@localhost) by x14.mi.uni-koeln.de (8.7.5/8.6.9) id WAA02633; Tue, 3 Sep 1996 22:32:05 +0200 (MET DST) Date: Tue, 3 Sep 1996 22:32:05 +0200 (MET DST) Message-Id: <199609032032.WAA02633@x14.mi.uni-koeln.de> From: Stefan Esser To: Luigi Rizzo Cc: hackers@freebsd.org, olah@freefall.freebsd.org, phk@freebsd.org, jkh@freebsd.org Subject: Re: SACK and other TCP modifications available In-Reply-To: <199608271404.QAA06501@labinfo.iet.unipi.it> References: <199608271404.QAA06501@labinfo.iet.unipi.it> Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Luigi Rizzo writes: > It would be nice if someone could try some of the changes below > and send some feedback, and possibly arrange to include this in > -current sources. > > Luigi > ----------- > > The file "sack.diffs", available from > > http://www.iet.unipi.it/~luigi/research.html > > includes a number of modifications to TCP designed to improve > performance in presence of losses, namely: > - MODIFIED FAST RETRANSMIT > - NEWRENO > - SACK (Selective Acknowledgements) > - TSACK (Selective Acknowledgements in RFC1323 timestamps) > > The software is in alpha stage, although it has been running for > a couple of weeks in intermediate formats, and it is running on a > couple of our systems since Aug.26 1996. > > MODIFIED FAST RETRANSMIT is really helpful on lossy links, and does > not need modifications at the receive side. Same for NEWRENO. Hi Luigi! I tried to contact the URL you gave above, but with no success at all :( And I really could make good use of those TCP patches, since I got as lossy a link as anybody could possibly imagine :) Is there another site that offers your patches ? How about uploading them to Freefall ? Regards, STefan