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Archive for August, 2009

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.

Teleportation

Monday, August 3rd, 2009

I teleported home one night
With Ron and Sid and Meg.
Ron stole Meggie's heart away
And I got Sidney's leg.

– Douglas Adams, The Restaurant at the End of the Universe.