For pure ruby code you write yourself with your own classes and while loops and algorithms and whatnot, rubinius can be up to 20 times faster then MRI. But ther

For pure ruby code you write yourself with your own classes and while loops and algorithms and whatnot, rubinius can be up to 20 times faster then MRI. But there are still some corner cases where it is slower. So micro benchmarks rubinius kicks ass over almost all the rubies. But macro is still has some spots to polish. The reason for this is that core things like Hash and String and Array are written in pure ruby. And they are only like 1.5 times slower then the C impls in the other rubies. This means that it is optimized for running ruby code really fast, this means that once the edge cases are gone, rubinius will smoke all the other rubies hands down.