From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bifrost.lang.hm (lang.hm [66.167.227.134]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 72A263B260; Fri, 20 May 2016 09:41:11 -0400 (EDT) Received: from asgard.lang.hm (asgard.lang.hm [10.0.0.100]) by bifrost.lang.hm (8.13.4/8.13.4/Debian-3) with ESMTP id u4KDf18l028114; Fri, 20 May 2016 06:41:01 -0700 Date: Fri, 20 May 2016 06:41:01 -0700 (PDT) From: David Lang X-X-Sender: dlang@asgard.lang.hm To: Jonathan Morton cc: moeller0 , cake@lists.bufferbloat.net, codel@lists.bufferbloat.net In-Reply-To: Message-ID: References: <22371476-B45C-4E81-93C0-D39A67639EA0@gmx.de> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: Re: [Codel] [Cake] Proposing COBALT X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 May 2016 13:41:11 -0000 On Fri, 20 May 2016, Jonathan Morton wrote: > Normal traffic does not include large numbers of fragmented packets (I would > expect a mere handful from certain one-shot request-response protocols which > can produce large responses), so it is better to shunt them to a single queue > per host-pair. I don't agree with this. Normal traffic on a well setup network should not include large numbers of fragmented packets. But I have seen too many networks that fragment almost everything as a result of there being a hop that goes through one or more tunneling layers that lower the effective MTU (and no, path mtu discovery does not always work) David Lang