TCP performance

Monday, August 31st, 2009

Here’s an interesting article on trying to understand TCP performance. It discusses how the TCP flow-control window (receive buffer), window scaling, selective ACKs and some other TCP features/options affect your link’s speed. Of course it’s only a tiny fraction of the total picture that is link performance, but it’s an interesting read.

There’s also a webpage which inspects the TCP options your browser sends and calculates it’s maximum theoretical speed.