[tsvwg] Hackathon tests

Dave Taht <dave.taht@gmail.com> Sun, 21 July 2019 15:30 UTC

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In-Reply-To: <22af0671-fdd0-0953-fc96-55b34beb0be9@bobbriscoe.net>
From: Dave Taht <dave.taht@gmail.com>
Date: Sun, 21 Jul 2019 08:30:31 -0700
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To: Bob Briscoe <in@bobbriscoe.net>
Cc: Sebastian Moeller <moeller0@gmx.de>, Jonathan Morton <chromatix99@gmail.com>, "Black, David" <David.Black@dell.com>, "ecn-sane@lists.bufferbloat.net" <ecn-sane@lists.bufferbloat.net>, "tsvwg@ietf.org" <tsvwg@ietf.org>, Dave Taht <dave@taht.net>, "De Schepper, Koen (Nokia - BE/Antwerp)" <koen.de_schepper@nokia-bell-labs.com>
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Subject: [tsvwg] Hackathon tests
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Just changing the endless topic line

On Sun, Jul 21, 2019 at 8:17 AM Bob Briscoe <in@bobbriscoe.net> wrote:
>
> Sebastian,
>
> On 19/07/2019 23:03, Sebastian Moeller wrote:
> > Hi Jonathan,
> >
> >
> >
> >> On Jul 19, 2019, at 22:44, Jonathan Morton <chromatix99@gmail.com> wrote:
> >> So I'm pleased to hear that the L4S team will be at the hackathon with a demo setup.  Hopefully we will be able to obtain comparative test results, using the same test scripts as we use on SCE, and also insert an RFC-3168 single queue AQM into their network to demonstrate what actually happens in that case.  I think that the results will be illuminating for all concerned.
> >       What I really would like to see, how L4S endpoints will deal with post-bottleneck ingress shaping by an RFC3168 -compliant FQ-AQM. I know the experts here deems this not even a theoretical concern, but I really really want to see data, that L4S flows will not crowd out the more reactive RFC3168 flows in that situation. This is the set-up quite a number of latency sensitive end-users actually use to "debloat" the internet and it would be nice to have real data showing that this is not a concern.
> Both teams brought their testbeds, and as of yesterday evening, Koen and
> Pete Heist had put the two together and started the tests Jonathan
> proposed. Usual problems: latest Linux kernel being used has introduced
> a bug, so need to wind back. But progressing.
>
> Nonetheless, altho it's included in the tests, I don't see the
> particular concern with this 'Cake' scenario. How can "L4S flows crowd
> out more reactive RFC3168 flows" in "an RFC3168-compliant FQ-AQM".
> Whenever it would be happening, FQ would prevent it.
>
> To ensure we're not continually being blown into the weeds, I thought
> the /only/ concern was about RFC3168-compliant /single-queue/ AQMs.
>
>
>
> Bob
>
> >
> > Best Regards
> >       Sebastian
> >
> >
> >
> >> - Jonathan Morton
> >> _______________________________________________
> >> Ecn-sane mailing list
> >> Ecn-sane@lists.bufferbloat.net
> >> https://lists.bufferbloat.net/listinfo/ecn-sane
> > _______________________________________________
> > Ecn-sane mailing list
> > Ecn-sane@lists.bufferbloat.net
> > https://lists.bufferbloat.net/listinfo/ecn-sane
>
> --
> ________________________________________________________________
> Bob Briscoe                               http://bobbriscoe.net/
>
> _______________________________________________
> Ecn-sane mailing list
> Ecn-sane@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/ecn-sane



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Dave Täht
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