From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1-g21.free.fr (smtp1-g21.free.fr [212.27.42.1]) by huchra.bufferbloat.net (Postfix) with ESMTP id 769EA21F170 for ; Wed, 3 Apr 2013 11:16:55 -0700 (PDT) Received: from pirx.pps.jussieu.fr (bob75-6-82-238-73-9.fbx.proxad.net [82.238.73.9]) by smtp1-g21.free.fr (Postfix) with ESMTP id E8BE09402A8; Wed, 3 Apr 2013 20:16:25 +0200 (CEST) Received: from localhost ([127.0.0.1] helo=pirx.pps.jussieu.fr) by pirx.pps.jussieu.fr with esmtp (Exim 4.80) (envelope-from ) id 1UNSEs-0001dT-4m; Wed, 03 Apr 2013 20:16:50 +0200 Date: Wed, 03 Apr 2013 20:16:50 +0200 Message-ID: <87y5czscml.wl%jch@pps.univ-paris-diderot.fr> From: Juliusz Chroboczek To: Stephen Hemminger In-Reply-To: <20130320161622.25fbd642@nehalam.linuxnetplumber.net> References: <514A1A60.2090006@swin.edu.au> <20130320161622.25fbd642@nehalam.linuxnetplumber.net> User-Agent: Wanderlust/2.15.9 MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] Solving bufferbloat with TCP using packet delay X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Apr 2013 18:16:58 -0000 > But it is hard, and the delay based algorithms are fundamentally > flawed because they see reverse path delay and cross traffic as false > positives. I'm not sure what you mean. All modern delay-based congestion algorithms that I am aware of use one-way delay as an indicator of congestion, not RTT. -- Juliusz