From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-x234.google.com (mail-qt0-x234.google.com [IPv6:2607:f8b0:400d:c0d::234]) (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 342C83B2A4 for ; Mon, 27 Nov 2017 18:55:08 -0500 (EST) Received: by mail-qt0-x234.google.com with SMTP id n32so41507793qtb.2 for ; Mon, 27 Nov 2017 15:55:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=UQ/IowG13wkJHb0N68mCxvizsiDWGf/pXOLrcRqcytU=; b=LPIY1Dsj9wEIN1zzJnMLNg7AnJNXyz72WcKtFNOrDbEOVa7zrA+63hYkTl5lSqrLmp pi24/aKk9h1F+2w7h5YBfUvE65Tcmw8svX7feBjzK7SLWdCxHA95pyNVmfaEhvMK0iXl /g0n/UBIOA2A89kQcFzM87drLR6UgWg5ANsy6qe7W5MmRNnqYAdPplC7Kz7g7GebFUsU e8n287K0IgXzEl1kfyyvPtIMROmPsOc4P1dQoHLuk6AL8BFrUXw+DqVic82jjtVu0puX ALwEaXnnSmxKGfRL0a6fLShrP1CzlnB0uePHcSdaA9yLHTn84KA6fp86Lrq9k5b1rb2n Zvag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=UQ/IowG13wkJHb0N68mCxvizsiDWGf/pXOLrcRqcytU=; b=E7nht1GYZ0CH+y4My30PMsdTZHERSd9QwiujQ2atj0LJBw6QqS/Y+lc7ncJOjvHK03 +3Jq3d7Ixxgk1sU6duKp0d3H6hmzNYkHzi56omSpD6788Gjx7HJ92cm9GRnb9k8ERl32 9TJyrRObE+broXfF50hK5oKK82cwSpuUTmsV+lv93wN9Q1Z8xiTMkQICM7dapEtg3RM/ L8W+309OrrZyUn/3ckeAfRFxSgcWzocTZNeVSTPT6aWo2k9NDQl6zrVDIQSthQNGCRlE 7SA0unOOw6LGnso92+v9xeuk1OcYN4o3eQTmaRm+JPb6ZmRmfxhhRUYh+ZXaBqr1FoMn FiAQ== X-Gm-Message-State: AJaThX73KJlTk+V+V5sFbu1cjYN5Q8h4txlLz1hO1yhMQEiw/y4l4qoF 663xlAWyvrKxo1R049wnVYmMYG9J2wgNtkXice0= X-Google-Smtp-Source: AGs4zMaQKkvZUu+xYTAyJndsxp8tqHu0eMrzMLF1acVuC3aS3BARtUOgFtSz9AP5dtPOZD5kvgzDW3HuEQLzTQ81t2w= X-Received: by 10.200.48.51 with SMTP id f48mr2529646qte.262.1511826907697; Mon, 27 Nov 2017 15:55:07 -0800 (PST) MIME-Version: 1.0 Received: by 10.12.193.93 with HTTP; Mon, 27 Nov 2017 15:55:07 -0800 (PST) In-Reply-To: References: <87shd18c51.fsf@toke.dk> From: Dave Taht Date: Mon, 27 Nov 2017 15:55:07 -0800 Message-ID: To: Martin Geddes Cc: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , bloat Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Bloat] Bufferbloat in high resolution + non-stationarity X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Nov 2017 23:55:08 -0000 On Mon, Nov 27, 2017 at 3:16 PM, Martin Geddes wrot= e: > Hi Toke, > > The two critical references are this paper and this PhD thesis. The forme= r > describes "cherish-urgency" multiplexing. The "cherish" is what is differ= ent > to today's scheduling. It is used to create a new class of algorithm whos= e > goal is global optimisation, not local optimisation (and global > pessimisation). > > The latter describes a paradigm change from "build it and then reason abo= ut > emergent performance" to "reason about engineered performance and then bu= ild > it". It works in practise, so whether it works in theory is left as an > exercise to the reader. > > The first step is to get the measurement right. I'm running a public > workshop in London on 8th Dec, and I am happy to accommodate anyone from > this list at our internal cost. > > Everyone working on AQM has done the best possible within the paradigm th= ey > are operating. There is a bigger box of possibilities available, but it > needs you to engage with a paradigm change. We are currently benchmarking the known alternatives vs everything else via a dozen methods we understand. fq_codel v "cake": http://www.drhleny.cz/bufferbloat/cake/round1/eg_csrt_rrulbe_eg_fq_codel_20= 0mbit/index.html http://www.drhleny.cz/bufferbloat/cake/round1/eg_csrt_rrulbe_eg_cakeeth_200= mbit/index.html > Martin > > About me Free newsletter Company website Twitter Zoom My new start-up Not > LinkedIn Martin Geddes Consulting Ltd, Incorporated in Scotland, number > SC275827 VAT Number: 859 5634 72 Registered office: 17-19 East London > Street, Edinburgh, EH7 4BN > > On 26 November 2017 at 12:20, Toke H=C3=B8iland-J=C3=B8rgensen wrote: >> >> Martin Geddes writes: >> >> > It doesn't matter what scheduling algorithm you build if it creates >> > arbitrage or denial-of-service attacks that can arm a systemic >> > collapse hazard. The good news is we have a new class of scheduling >> > technology (that works on a different paradigm) that can fully address >> > all of the requirements. We are currently deploying it to enable the >> > world's first commercial quality-assured broadband service. >> >> Could you point to any research papers describing this technology? Would >> be interesting to read up on... >> >> -Toke > > > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat > --=20 Dave T=C3=A4ht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619