Date: Wed, 17 Apr 2002 12:02:35 -0500 From: Damon Permezel <dap@damon.com> To: Christophe Prevotaux <c.prevotaux@hexanet.fr> Cc: A.Isaev@astelit.ru, freebsd-net@FreeBSD.ORG Subject: Re: FreeBSD 4.5 and network problems Message-ID: <20020417170235.GV343@fubar.damon.com> In-Reply-To: <20020417185228.7bada407.c.prevotaux@hexanet.fr> References: <16114655943.20020417131347@astelit.ru> <20020417160045.GQ343@fubar.damon.com> <20020417185228.7bada407.c.prevotaux@hexanet.fr>
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I am talking about IP over gigabit ethernet. Concievably, if one had enough time, one might observe this over a satellite link. The necessary flows are bandwidth independent, but the time to observe the problem is bandwidth dependent. On Wed, Apr 17, 2002 at 06:52:28PM +0200, Christophe Prevotaux wrote: > Are you talking about IP over Satellite link ? > > > > On Wed, 17 Apr 2002 11:00:45 -0500 > Damon Permezel <dap@damon.com> wrote: > > > Not sure about the initial delays, but I found a bug which does cause > > throughput to drop dramatically once it is hit. > > > > Consider the sender of a bulk data transfer (1/2 duplex). > > When header prediction is successful, the ACK stream coming back > > is handled by the fast path code. For this to be true, the window info > > in that ACK stream cannot change. > > > > tiwin && tiwin == tp->snd_wnd > > > > -- > =============================================================== > Christophe Prevotaux Email: c.prevotaux@hexanet.fr > HEXANET SARL URL: http://www.hexanet.fr/ > Z.A.C Les Charmilles Tel: +33 (0)3 26 79 30 05 > 3 Allée Thierry Sabine Direct: +33 (0)3 26 79 08 02 > BP202 Fax: +33 (0)3 26 79 30 06 > 51686 Reims Cedex 2 > FRANCE HEXANET Network Operation Center > =============================================================== -- -- Damon Permezel dap@damon.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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