Re: 10g residential CPE

[Mikael Abrahamsson via NANOG <nanog () nanog org>]

On Sat, 26 Dec 2020, Baldur Norddahl wrote:

> I demonstrated that it is about buffers by showing the same download 
> from a server that paces the traffic indeed gets the full 930 Mbps with 
> exactly the same settings, including starting window size, and the same 
> path (Copenhagen to Stockholm).

You demonstrated that it's about which TCP algorithm they use, probably.

They all respond very differently to increase in RTT vs loss.

https://arxiv.org/pdf/1903.03852.pdf

Generally the Internet doesn't need more buffers, it needs less. If you 
have only FIFO available, configure it to tail-drop at 10ms or so, to help 
your customers with what they really care about, interactive performance.

I debloat my 1000/1000 with bidir 900/900 FQ_CODEL to avoid my downloads 
affecting my interactive performance.

--
Mikael Abrahamsson    email: swmike () swm pp se