broken bandwidth-delay product window limiting

David Malone dwmalone at maths.tcd.ie
Fri Mar 25 07:36:01 PST 2005


On Fri, Mar 25, 2005 at 07:29:10AM -0800, David G. Lawrence wrote:
>    The "bandwidth-delay product window limiting" code in 5.x appears to be
> quite broken. In my tests here, the window is hard limited to 2 segments,
> regardless of the actual bandwidth-delay product, and this results in very
> poor performance over non-local TCP connections.  I'd suggest shipping 5.4
> and future releases with net.inet.tcp.inflight.enable=0 until this problem
> can be fixed.

Have you seen:

	http://www.FreeBSD.org/cgi/query-pr.cgi?pr=75122

I wonder if it is the same bug or a different one?

	David.


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