On: A Million-user Comet Application with Mochiweb, Part 1

[amix]

The benchmark is very misleading as it's very cheap to open connections, especially when using non-blocking IO...

A good post about real-life performance of different comet frameworks: http://cometdaily.com/2008/03/14/comet-gazing-maturity/ They range from 1000 to 20.000 users pr. node.