From owner-freebsd-net Wed Apr 17 9:52:45 2002 Delivered-To: freebsd-net@freebsd.org Received: from proton.hexanet.fr (proton.hexanet.fr [81.23.32.33]) by hub.freebsd.org (Postfix) with ESMTP id C928837B417 for ; Wed, 17 Apr 2002 09:52:40 -0700 (PDT) Received: from hexanet.fr (localhost [127.0.0.1]) by proton.hexanet.fr (8.11.6/8.11.6) with SMTP id g3HGqSa03207; Wed, 17 Apr 2002 18:52:28 +0200 (CEST) (envelope-from c.prevotaux@hexanet.fr) Date: Wed, 17 Apr 2002 18:52:28 +0200 From: Christophe Prevotaux To: Damon Permezel Cc: A.Isaev@astelit.ru, freebsd-net@FreeBSD.ORG Subject: Re: FreeBSD 4.5 and network problems Message-Id: <20020417185228.7bada407.c.prevotaux@hexanet.fr> In-Reply-To: <20020417160045.GQ343@fubar.damon.com> References: <16114655943.20020417131347@astelit.ru> <20020417160045.GQ343@fubar.damon.com> Organization: HEXANET Sarl X-Mailer: Sylpheed version 0.7.4 (GTK+ 1.2.10; i386-portbld-freebsd4.4) X-NCC-RegID: fr.hexanet Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit 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 Are you talking about IP over Satellite link ? On Wed, 17 Apr 2002 11:00:45 -0500 Damon Permezel 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 =============================================================== To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message