Those aren't very fair to the dynamic languages and JIT compiled languages (this includes Scala). * For the dynamic languages execution time includes the time

Those aren't very fair to the dynamic languages and JIT compiled languages (this includes Scala). * For the dynamic languages execution time includes the time it takes to lex, parse and interpret the source code. * For language implementations with a JIT execution time includes the time the JIT takes to properly optimise hot code paths. Generally you start benchmarking after a warm up period in such cases. The only fair comparisons are those between ahead of time compiled languages.