[Bloat] Bufferbloat in high resolution + non-stationarity

Dave Taht dave.taht at gmail.com
Mon Nov 27 18:55:07 EST 2017


On Mon, Nov 27, 2017 at 3:16 PM, Martin Geddes <mail at martingeddes.com> wrote:
> Hi Toke,
>
> The two critical references are this paper and this PhD thesis. The former
> describes "cherish-urgency" multiplexing. The "cherish" is what is different
> to today's scheduling. It is used to create a new class of algorithm whose
> goal is global optimisation, not local optimisation (and global
> pessimisation).
>
> The latter describes a paradigm change from "build it and then reason about
> emergent performance" to "reason about engineered performance and then build
> 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 they
> 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_200mbit/index.html

http://www.drhleny.cz/bufferbloat/cake/round1/eg_csrt_rrulbe_eg_cakeeth_200mbit/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 Høiland-Jørgensen <toke at toke.dk> wrote:
>>
>> Martin Geddes <mail at martingeddes.com> 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
>
>
>
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-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619


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