We should really publish a blog post about this.
- If we will take benchmark, "+RTS -Nx -qa -Aym" should be specified to a server. "y" should be changed according to "x", the number of core. I'm using "+RTS -N10 -qa -A32m" on a 12 core machine. "-qa" improves performance on Linux but not FreeBSD even if a "-qa" bug of GHC on FreeBSD is fixed. http://hackage.haskell.org/trac/ghc/ticket/7708 - "ab" sucks. We should use "weighttp" instead. I use as weighttp -n 1000000 -c 1000 -k -t 10 "http://X.Y.Z.W:8000/" which creates 10 native threads. For more information, please refer to: http://gwan.com/en_apachebench_httperf.html http://www.iij.ad.jp/company/development/tech/activities/weighttp/index.html (in Japanese, sorry) --Kazu