Re: Poor TCP performance as latency increases

[email protected] (Lloyd Parkes) writes:

>If you are feeling enthusiastic you could create a test network with a
>FreeBSD router and use FreeBSD's dummynet delay emulator. This might
>eliminate a bunch of variables.

I'm using Linux as a delay emulator, and you can see the same behaviour.

After some error the connection falls into slow start and quickly
enters congestion avoidance where the window grows very slowly.
I also doubt that the SACK code is working correctly.