[Starlink] on using and debugging lossless congestion control (RFC3168 ECN)

[Dave Taht]

On Mon, Jun 21, 2021 at 8:47 AM Dave Taht <dave.taht at gmail.com> wrote:
>
> On Mon, Jun 21, 2021 at 8:06 AM Michael Richardson <mcr at sandelman.ca> wrote:
> >
> > Dave Taht <dave.taht at gmail.com> wrote:
> >     > It came up recently that a lot of folk don't like the idea of dropping
> >     > packets as a congestion
> >     > control mechanism. Like loss or not... the fundamental paper on this
> >     > subject is Van Jacobson and Mike Karels:
> >
> >     > "On congestion avoidance and control"
> >
> >     > http://web.stanford.edu/class/cs244/papers/CongestionControl.pdf
> >
> > I saved this post a long time ago.
> > http://www.sandelman.ca/mcr/humour/vanj-enet-posting.txt

>From that piece:

"funding agents looking for high speed,
next-generation networks may forget that research to make slow
things go fast sometimes makes fast things go faster".

Recently I dusted off fq_codel_fast in light of the cache misses
finally showing up
in a 100gbit dual bonded scenario over here:

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=848ca9182a7d25bb54955c3aab9a3a2742bf9678

asked the author to give it a try.





> That was a *great* piece of history thx. And he referenced greg
> chesson's work on XTP,
> ( https://grainger.illinois.edu/alumni/distinguished/9560 )
>
> Greg was an early consultant to the bufferbloat project...
> he sadly passed before we ever had a chance to jam together.
>
> https://news.ycombinator.com/item?id=9795462
>
> > There is another one about how he crashed Interop, which I don't know where I
> > put.
>
> More folk should have seen van's codel preso at ietf 84. It was the
> very very early days of webrtc.
>
> https://archive.org/details/video1_20191129
> >
> > --
> > ]               Never tell me the odds!                 | ipv6 mesh networks [
> > ]   Michael Richardson, Sandelman Software Works        |    IoT architect   [
> > ]     mcr at sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [
> >
> >
> >
>
>
> --
> Latest Podcast:
> https://www.linkedin.com/feed/update/urn:li:activity:6791014284936785920/
>
> Dave Täht CTO, TekLibre, LLC



--
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Dave Täht CTO, TekLibre, LLC