I encourage you to look a the benchmarks published here: http://haskell.cs.yale.edu/wp-content/uploads/2013/08/hask035-voellmy.pdf http://haskell.cs.yale.edu/wp

I encourage you to look a the benchmarks published here: http://haskell.cs.yale.edu/wp-content/uploads/2013/08/hask035-voellmy.pdf http://haskell.cs.yale.edu/wp-content/uploads/2013/08/hask03... which includes Haskell beating nginx and Haskell beating SDN controllers written in C++ and in Java.