[antihero]

I may be wrong, but with those benchmarks, the "typical" servers are configured to load the text "PONG" from a file as opposed to the haskell servers that are hard-coded to do it. Surely I/O gives them a massive disadvantage?

[thesz]

Yesod does support sendfile: http://hackage.haskell.org/packages/archive/yesod/0.7.1/doc/...