From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-x233.google.com (mail-io0-x233.google.com [IPv6:2607:f8b0:4001:c06::233]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B8C6A3B2A2; Fri, 3 Jun 2016 15:09:32 -0400 (EDT) Received: by mail-io0-x233.google.com with SMTP id t40so84810640ioi.0; Fri, 03 Jun 2016 12:09:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:cc:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding; bh=ukb455tUE25vGio9Y7TZWBTjieTc5amV5R+nD4bj6tU=; b=je4llp1iskZsdXMOjUHi8ALRxTYMdUUgG7NxkV7X5/TQzbe01Uu4BNAgZddR856qsg nJ1RrujC18alkKfkG82l3wHnoz4Gyr6Mx9DfNgv6ffCr+hFUOdv1fj6Bnrn43FxKOB4O Lvu3hoZnvRm5KE47A1Uy8V7KaapQFDGs+kIF+ajHHLO+As4JU+hLdllhfBSvydke/g9r 6qjSGuQ8xno4vH3qmAunb7/D4YzIpDSxxdqSgE30PR4/udivRq8Z3SIERxWrymVxaKsM 9uvpJJoCup0wkDCneGeetQiRRKOIAssgHV7elXnhvUsTkOboPpZQn2xEid7i2n6wgh9L dsZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=ukb455tUE25vGio9Y7TZWBTjieTc5amV5R+nD4bj6tU=; b=lIbnNNIavKkdw02cB/6AeBCz3DPi7zQfvVAoYMFWlLdAxd8ajUZqxip9BoSslLawdn lxfSWEe9lb0Hz5uDjsBjOro4N4ETRs8Wv6STaWSWeGV2u5a9hgi9lfJ0imVk+h/AiISD YWCWKMl6t93ZWgGI5dF+bD7n5serS6RWHNze21jXG8llkRn1XAblaOKGW94zGZSsMj21 a7yJD50J10s73dMG/KgLi6YG1F/7Bmo7vVySP2eOH5vzEppjtvYh3dkoIEyRcZpPSjek BiHFppXN5RMbMKh66p6yPj+5OHFBkUmgZTTbDGdLaFyOE7gtHyPSSD2v7LcIhp413U+W guoQ== X-Gm-Message-State: ALyK8tKqLRgTVnlVcObANJMYQDK7QFTY2rhulnPhqnE9UZBhgJTks6TPl1wVDoUAenmy3A== X-Received: by 10.107.9.10 with SMTP id j10mr8088603ioi.97.1464980972114; Fri, 03 Jun 2016 12:09:32 -0700 (PDT) Received: from ?IPv6:2601:404:381:a21:3148:6443:ce44:f1f1? ([2601:404:381:a21:3148:6443:ce44:f1f1]) by smtp.gmail.com with ESMTPSA id o68sm427635itc.0.2016.06.03.12.09.31 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 03 Jun 2016 12:09:31 -0700 (PDT) To: Jonathan Morton , =?UTF-8?Q?Dave_T=c3=a4ht?= References: <22371476-B45C-4E81-93C0-D39A67639EA0@gmx.de> <857AEE56-E7DB-4981-B32E-82473F877139@gmail.com> <8AB0D25D-C1CA-45F1-889E-2F73CF8C44F7@gmail.com> <323AFC22-A092-4F59-8197-AF21EF73FD58@gmail.com> <274D3A0FA900FD47AA6B56991AAA32FDC5529FC8@wtl-exchp-1.sandvine.com> <574478B4.7080103@taht.net> <39F38477-A877-4C1B-9B7F-BB3358425F17@gmail.com> Cc: cake@lists.bufferbloat.net, codel@lists.bufferbloat.net From: Noah Causin Message-ID: <0eb223f9-2873-7f53-c2ce-c6867ddec17c@gmail.com> Date: Fri, 3 Jun 2016 15:09:30 -0400 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: <39F38477-A877-4C1B-9B7F-BB3358425F17@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: [Cake] [Codel] Proposing COBALT X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Jun 2016 19:09:32 -0000 Was the issue, where the drops and marks did not seem to occur, resolved? On 5/26/2016 8:33 AM, Jonathan Morton wrote: >> On 24 May, 2016, at 18:52, Dave Täht wrote: >> >> My last attempts with cake the way it was had it performing miserably at >> longer RTTs (try 50ms) vs codel or fq-codel - as in half the throughput >> achieved by codel, at that RTT. > There’s definitely something weird going on - as if the marks and drops reported by the stats are not actually occurring, except for the drops on queue overflow. > > Testing 50:1 flows on 1:10 bandwidth, for example, the single flow is stuck below the aggregate throughput of the 50, suggesting strongly that its acks are not being thinned. Cake used to be best-in-class on that very test. > > I will investigate further. But the solution may be to just perform the refactoring necessary to cleanly integrate COBALT, and eliminate subtle bugs by dint of simply sweeping away some unnecessarily gnarly code. I think COBALT’s API is probably a lot easier to integrate into a complex qdisc than Codel’s. > > - Jonathan Morton > > _______________________________________________ > Cake mailing list > Cake@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/cake