Be aware that BBR is a moving target. There was an important WiFi fix that went into BBRv1 in Jan 2019 that didn't make it into lots of distros... BBRv2 is in the wings and fixes (nearly?) all sharing issues, but isn't done yet.

Key takeaway: pacing is inevitable, because it saves large content providers money (more efficient use of the most expensive silicon in the data center, the switch buffer memory), however to use pacing we walk away from 30 years of experience with TCP self clock, which is the foundation of all of our CC research....

Thanks,

--MM--
The best way to predict the future is to create it. - Alan Kay

We must not tolerate intolerance;

however our response must be carefully measured:

too strong would be hypocritical and risks spiraling out of control;

too weak risks being mistaken for tacit approval.

On Fri, Dec 13, 2019 at 1:25 PM Dave Taht <dave.taht@gmail.com> wrote:

and everything we know about the tcp macroscopic model, is obsolete,
according to a provocative paper by matt mathis and Jamshid Mahdavi
in sigcomm.

https://ccronline.sigcomm.org/wp-content/uploads/2019/10/acmdl19-323.pdf

On Fri, Dec 13, 2019 at 1:05 PM Carlo Augusto Grazia
<carloaugusto.grazia@unimore.it> wrote:
>
> Hi Dave,
> thank you for your email!
> Toke told me about AQL a couple of weeks ago, I definitely want to test it ASAP.
> BBR struggles a lot on Wi-Fi interfaces (ones with aggregation) with kernel 4.14 & 4.19.
> Anyway, it seems that with BBRv2 on new kernels this problem does not exist anymore.
>
> Best regards
> Carlo
>
> Il giorno ven 13 dic 2019 alle 20:54 Dave Taht <dave.taht@gmail.com> ha scritto:
>>
>> https://sci-hub.tw/10.1109/WiMOB.2019.8923418
>>
>> It predates the aql work, but the bbr result is puzzling.
>>
>>
>> --
>> Make Music, Not War
>>
>> Dave Täht
>> CTO, TekLibre, LLC
>> http://www.teklibre.com
>> Tel: 1-831-435-0729
>
> --
> --------------------------------------------------------------------
> Carlo Augusto Grazia, Ph. D.
> Assistant Professor
> --------------------------------------------------------------------
> Dept. of Engineering "Enzo Ferrari"
> University of Modena and Reggio Emilia
> Via Pietro Vivarelli, 10/1 - 41125 - Modena - Italy
> Building 26, floor 2, room 28
> Tel.: +39-059-2056323
> email: carloaugusto.grazia@unimore.it
> Link to my personal home page here
> --------------------------------------------------------------------

--
Make Music, Not War

Dave Täht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-435-0729
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