[Bloat] less than best effort: TCP - flexis - A New Approach To Incipient Congestion Detection and Control

[Dave Taht]

Dear Qian:

Pretty promising paper. I liked that it tackled congestion on the ack
path, among other things.

https://www.techrxiv.org/articles/preprint/TCP_FlexiS_A_New_Approach_To_Incipient_Congestion_Detection_and_Control/19077161/1/files/33905018.pdf

I like also that you tackled, inter-rtt fairness, and, ledbat's
latecomer advantage problem, and in fig 9, the basic problem with
delay based LBE vs AQMs (in that ledbat degrades to reno)... [1]

Towards your conclusion...

I have always disagreed with the "don't reduce segment size" crowd,
btw. If you have a rate where you need to go below 2mss, it doesn't
hurt the network to reduce the size of the packet, and you can keep
the signal strength up by reducing that size and continuing to sample
rtt, to respond quickly.

Even if you are only passing a single byte of data, by lowering this
below everyone else's 2mss noise floor, you still eventually win, and
also you occupy space in packet fifos, reducing overall latency, as
bytes=time. IMHO.

elsewhere, sub-packet windows are being experimented in bbrv2, I'm
told, but not in LBE.

I'm also a big believer in packet pacing, and I think this is the
first paper I've seen that attempted LBE with it. Thx!

Got a git tree?

[1] do wish you'd had cited
https://perso.telecom-paristech.fr/drossi/paper/rossi14comnet-b.pdf

-- 
I tried to build a better future, a few times:
https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org

Dave Täht CEO, TekLibre, LLC