On 08/13/2013 12:23 PM, Michael Welzl wrote:
On 13. aug. 2013, at 12:09, Daniel Borkmann wrote:
On 08/12/2013 02:33 PM, Michael Tuexen wrote:
On Aug 12, 2013, at 2:23 PM, Karl Heiss <kheiss@xxxxxxxxx> wrote:
All,
A recent post to the netdev mailing list made it clear that SCTP
doesn't support socket buffer autotuning. All of a sudden, many of
our benchmarks start to make sense... Has there been any
work/investigation to support this? I suspect that there might be
some difficulty due to the multihoming nature of SCTP, but I haven't
taken the time to really investigate this avenue... Any insight it
greatly appreciated.
I think some work was already done:
http://heim.ifi.uio.no/michawe/research/projects/new-transport/implementing-sctp-auto-buffer-tuning.html
Not sure about the current status.
I'm CCing Michael as he most likely knows.
Thanks for sharing this link Michael!
I'm currently on vacation, but when I'm back, I'll also take a look
at it and see what we can do with buffer autotuning on Linux. I already
started end of last week to do some experimenting.
Cool! Getting Linux SCTP up to speed would be a wonderful thing!
In case you're interested, Michael Tuexen and I once sat down to create a list of issues that we believe Linux SCTP could have, and it's on these slides:
http://heim.ifi.uio.no/~michawe/research/publications/caia-feb11.pdf
no. 28 - 30
Note that this was a few years ago... still, one or two of the issues might still exist?!
Besides, Morten Hustveit has also began with pluggable congestion control in the SCTP in which he also did the auto-buffer tuning work:
http://heim.ifi.uio.no/~michawe/research/projects/new-transport/implementing-sctp-pluggable-congestion-control.html
but from the look of the graphs at this page, it never really worked. Still, this is probably a cleanly done starting point.
Thanks for all the links.
I will most certainly have a look at those i.e. pluggable cong.control
and auto buffer tuning and also open issues from the slides when I'm
back from vacation!
Cheers,
Daniel
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