* cruby (ruby 2.0.0p0 (2013-02-24) [i386-mingw32])

        c:\dev\mruby>w32time ruby fib.rb
        63245986
        real    10.428
        system  0.046
        user    10.374

* mruby (メソッドキャッシュなし)

        c:\dev\mruby>w32time bin\mruby fib.rb
        63245986
        real    32.210
        system  0.000
        user    32.136

* mruby (メソッドキャッシュあり)

        c:\dev\mruby>w32time bin\mruby fib.rb
        63245986
        real    30.622
        system  0.000
        user    30.607