linux-kernel - What's the TCP congestion control algorithm?

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Message-ID: <CAGXjX9BU19E8etua+AqMPi3npXa8s1FUDNDaHq=qRTmAZ_6oxg@mail.gmail.com>
Date:	Wed, 11 Jul 2012 09:15:23 -0400
From:	Martin Martin <martin@...verliningsystems.com>
To:	linux-kernel@...r.kernel.org
Subject: What's the TCP congestion control algorithm?

According to the Wikipedia article on CUBIC, it's used in Linux kernels
2.6.19 and above.  Is that still the case?  Are there any plans to use a
different algorithm in the foreseeable future?

Is it as described in the 2008 ACM SIGOPS paper by Ha, Rhee and Xu:

http://cse.unl.edu/~xu/paper/ha_ACM_2008.pdf

?

Also, I'm having throughput problems when running netcat from machine A ->
machine B, then taking the output and using separate instances of netcat to
move it from B to C.  I'm guessing it's some interaction with the congestion
control algorithm, but I don't really know.  Can anyone suggest a more
appropriate mailing list, book or other resource for tracking this down?

Thanks,
Martin
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