[c-nsp] TCP behavior under strict CAR rate-limiting

[Gert Doering]

Hi,

On Thu, Jun 19, 2008 at 02:22:39PM -0700, Christopher Hunt wrote:
>  Thanks for the reply.  I understand that those values are not 
> recommended and in fact i do not use them outside of the lab.  I am, 
> however, struggling to understand how TCP reacts to very very low burst 
> levels.  What mechanism is causing such low throughput as the 
> tcp_receive_window values are not low?

tcp_receive_window is set by the receiver, which doesn't know anything
about line conditions.  The receive window is a function of locally
available buffer space.

The TCP sender will notice packet loss, and throttle the sending rate.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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