[Bloat] [Starlink] Of interest: Comcast AQM Paper

Sebastian Moeller moeller0 at gmx.de
Wed Aug 4 09:03:08 EDT 2021

I guess the point is AQM is not really that expensive, even FQ AQM, traffic shaping however is expensive. But for wifi shaping is not required so AQM became feasible.


On 4 August 2021 14:46:30 CEST, Mikael Abrahamsson via Bloat <bloat at lists.bufferbloat.net> wrote:
>On Wed, 4 Aug 2021, Jonathan Morton wrote:
>> Linux-based CPE devices have AQM functionality integrated into the Wifi 
>> stack.  The AQM itself operates at layer 3, but the Linux Wifi stack 
>> implementation uses information from layers 2 and 4 to improve 
>> scheduling decisions, eg. airtime-fairness and flow-isolation (FQ). This 
>> works best on soft-MAC Wifi hardware, such as ath9k/10k and MT76, where 
>> this information is most readily available to software.  In principle it 
>> could also be implemented in the MAC, but I don't know of any vendor 
>> that's done that yet.
>Does this work also with flowoffload enabled, or is that not accelerated 
>on for instance MT76? I'm surprised since MT76 can barely do 100 meg/s of 
>large packets using only CPU?
>Mikael Abrahamsson    email: swmike at swm.pp.se
>Bloat mailing list
>Bloat at lists.bufferbloat.net

Sent from my Android device with K-9 Mail. Please excuse my brevity.
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