Real-world benchmarks
$ time ruby --version
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.4.2]
real 0m0.058s
user 0m0.029s
sys 0m0.026s
$ time node --version
v0.10.15
real 0m0.013s
user 0m0.009s
sys 0m0.003s
$ time ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.6.3
real 0m0.074s
user 0m0.006s
sys 0m0.012s