From owner-freebsd-net Thu Aug 8 15:33:43 2002 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 43C8537B400 for ; Thu, 8 Aug 2002 15:33:41 -0700 (PDT) Received: from patrocles.silby.com (d110.as14.nwbl0.wi.voyager.net [169.207.134.110]) by mx1.FreeBSD.org (Postfix) with ESMTP id F326043E6E for ; Thu, 8 Aug 2002 15:33:39 -0700 (PDT) (envelope-from silby@silby.com) Received: from patrocles.silby.com (localhost [127.0.0.1]) by patrocles.silby.com (8.12.5/8.12.5) with ESMTP id g78MavB1053647; Thu, 8 Aug 2002 17:36:57 -0500 (CDT) (envelope-from silby@silby.com) Received: from localhost (silby@localhost) by patrocles.silby.com (8.12.5/8.12.5/Submit) with ESMTP id g78Mas1U053644; Thu, 8 Aug 2002 17:36:55 -0500 (CDT) X-Authentication-Warning: patrocles.silby.com: silby owned process doing -bs Date: Thu, 8 Aug 2002 17:36:54 -0500 (CDT) From: Mike Silbersack To: "Henderson, Thomas R" Cc: freebsd-net@freebsd.org Subject: RE: [patch] Possible newreno fix, please test In-Reply-To: <00EBC850E752CC46B8509DAB4D0D2CB910691A@xch-nw-29.nw.nos.boeing.com> Message-ID: <20020808173357.N52867-100000@patrocles.silby.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Thu, 8 Aug 2002, Henderson, Thomas R wrote: > I'm curious to the motivation behind this patch. What have people > experienced that this patch corrects? > > The first fix appears to disable the artificial window inflation > that occurs during the recovery period-- intended to keep data > flowing in the pipe so ack clocking doesn't break down. > > The second fix should not have much of an impact (difference > of one segment in cwnd when you leave fast recovery)-- but > does have a possible side effect of leaving you with a cwnd > of zero. > > Tom Ruh roh, now I'm confused. From the comment at this url: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/tcp_input.c?rev=1.69&content-type=text/x-cvsweb-markup&cvsroot=openbsd&f=h I assumed that you submitted the newreno parts, but I guess that was _not_ the case. Were your fixes more related to SACK/FACK? Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message