Re: Possible BUG in IPv4 TCP window handling, all recent 2.4.x/2.6.x kernels

On Sep 2, 2005, at 10:05 AM, lists@limebrokerage.com wrote:

This particular Win2k sender sends _only_ real-time data, it's not 
capable of rewinding. So it's always sending small packets, from start 
to finish, yet the problem still occurs.

Note that even real-time data can end up generating a stream of 
full-size packets occassionally. It's just very unlikely they would 
occur at the start of the flow, as market data is very thin in the 
pre-market open hours.

The rcv_ssthresh growth can actually take place anywhere in the flow, 
not just at the beginning.

quoted

But, that window clamping should fix the problem, as we recalculate
the window to advertise.

Patches for testing are very much welcome...

Have you tried increasing the size of the receive buffer yet?

   -John