Re: [aqm] Status of the GSP AQM?

"Francini, Andrea (Nokia - US/Murray Hill)" <andrea.francini@nokia-bell-labs.com> Fri, 15 December 2017 15:56 UTC

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From: "Francini, Andrea (Nokia - US/Murray Hill)" <andrea.francini@nokia-bell-labs.com>
To: "Bless, Roland (TM)" <roland.bless@kit.edu>, Wesley Eddy <wes@mti-systems.com>, "aqm@ietf.org" <aqm@ietf.org>, "Lautenschlaeger, Wolfram (Nokia - DE/Stuttgart)" <wolfram.lautenschlaeger@nokia-bell-labs.com>
Thread-Topic: [aqm] Status of the GSP AQM?
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Date: Fri, 15 Dec 2017 15:55:54 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/aqm/Rpk_JJhAmz7lwbo-fG8xVVzPj2c>
Subject: Re: [aqm] Status of the GSP AQM?
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I know Wolfram is on vacation until January 8. I am sure he will provide input when he comes back.

I believe the interest of the working group in GSP faded because there was not a public implementation available for testing. If the GSP version mentioned by Roland can be made public, it is definitely worth testing it.

Regards,

Andrea

-----Original Message-----
From: aqm [mailto:aqm-bounces@ietf.org] On Behalf Of Bless, Roland (TM)
Sent: Friday, December 15, 2017 3:26 AM
To: Wesley Eddy <wes@mti-systems.com>;; aqm@ietf.org; Lautenschlaeger, Wolfram (Nokia - DE/Stuttgart) <wolfram.lautenschlaeger@nokia-bell-labs.com>;
Subject: Re: [aqm] Status of the GSP AQM?

Hi Wesley,

Am 14.12.2017 um 22:59 schrieb Wesley Eddy:
> I mentioned GSP as a possible work item, back when we were discussing
> rechartering, but apparently it was not compelling to the group at that
> time.
> 
> When we did the AQM algorithm adoption call ~2014, GSP appeared to be
> basically viable technically, but there wasn't evidence that multiple
> parties were interested in working with it enough to go forward (not
> just working the document, but implementing, simulating, testing,
> analyzing, deploying, etc).   There is a thread in the archives with
> subject "[aqm] adoption call: algorithm drafts".

Thanks for the pointer! At that point in time there was not enough
experience with it.

> I haven't noticed a change in activity around GSP since then, but
> apologize if I'm just ignorant of it!

That's right, maybe Wolfram was busy with other stuff.
Our group, however, worked with it at speeds of 1 Gbit/s
and also 10 Gbit/s and we can confirm that its performance is comparable
to - and w.r.t. loss desynchronization - even better than CoDel or PIE
in many of our tested scenarios. Since it's heading for just an
experimental status, the bar shouldn't be too high to get this finished.

Regards,
 Roland

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