[Iccrg] CUBIC congestion control module for FreeBSD
lastewart at swin.edu.au
Sat Sep 19 00:46:43 BST 2009
Late last year I wrote to the list with some feedback  on the CUBIC
draft, based on my work hacking on a clean-room implementation of CUBIC
for FreeBSD. I recently got around to cleaning up the code and releasing
it after numerous distractions since that correspondence with the list.
I also spoke at the IETF 75 ICCRG meeting in Stockholm  about some of
this work and various thoughts/observations.
The code was developed to fully implement the algorithm specified in
, and my initial testing indicates the code is working in accordance
with the spec. Directly comparing the FreeBSD CUBIC dynamics to those
seen with Linux reveals some interesting differences, which would be
good to investigate further.
The FreeBSD modular congestion control framework and HTCP/CUBIC
congestion control modules are available as patches from . The work
is being carried out in the main FreeBSD Subversion repository,
available from [5,6], which is where you can always find the latest code.
The work will be incorporated into the mainline FreeBSD source tree in
the not too distant future. In the meantime, I encourage people to
experiment with the code and other tools available from , and welcome
any feedback, comments and suggestions.
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