Red Black Tree benchmark for ruby && python.
Mainly to comparison different ruby implementations and python version to see how it's related to ruby (for that specific benchmark).

How to run?
some-ruby --some-options bm1.rb 100 # run bm1.rb with looping 100x times
where:
  some-ruby is you ruby (ruby, ruby1.9, rbx, jruby, maglev etc.)
  --some-options - specific options for your ruby version (ie. --server fot jruby)