Arg. TCP slow start killing me.

Jason Hellenthal jhell at DataIX.net
Mon Nov 14 05:47:44 UTC 2011


Have you considered this thread ?

A Tale of a TCP bug...

http://lists.freebsd.org/pipermail/freebsd-net/2011-April/028448.html

This was fixed in 8-STABLE before 8.2 release but after 8.1-RELEASE.

A pcap dump of the traffic at the routing end and the recieving end might just reveal this as the cause.

On Sun, Nov 13, 2011 at 03:38:57PM -0800, Erich Weiler wrote:
> Thanks Jason!
> 
> > Is it possible to upgrade to 8.2-STABLE?  Cubic has shown some really
> > great improvement in my latent paths, a steady 10% overall increase in
> > same cases.
> 
> Alas no, my OS is a pre-baked install for pfSense, and if I tried to 
> upgrade it, it would likely break some of the functionality of how 
> pfSense is built.  I've considered patching in some kernel mods to add 
> cubic and H-TCP to the kernel, but even that makes me nervous.
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