> On 15 Oct, 2023, at 11:29 pm, David P. Reed via Cake 
> <cake@lists.bufferbloat.net> wrote:
> 
> Of course, Internet congestion control, in general, is still stuck in the 
> original Van Jacobsen sawtooth era. My guess is it won't get fixed, though I 
> applaud Cake, and despair the hardware folks who keep adding buffers.

I am still working in this area, including on a revised version of SCE which 
might regain traction in the IETF.

One of the more immediate results of this is a new AQM algorithm which builds 
on the success of Codel, and a family of qdiscs I'm building around it.  These 
range from a queueless traffic policer to a "Cake version 2", with an 
interesting approximate-fairness approach for the middle child.  The AQM itself 
is already working, though not yet documented in a public-facing form.

I'm also taking a new approach to overlaying the "small" congestion response of 
SCE over the "big" response of conventional congestion control, which I think 
is capable of solving several long-standing problems in one go.  I'll say more 
when we have a working prototype - but think in terms of "no sawtooth" and 
"naturally max-min fair".  TCP Prague will look positively primitive compared 
to this - if it works (and it should).

 - Jonathan Morton
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