Sean Mehan wrote:
> Here are some numbers:
> 
> http://shootout.alioth.debian.org/gp4/benchmark.php?test=all&lang=jruby&lang2=yarv

That one's a little old...this is more recent, with JRuby 1.1.6:

http://shootout.alioth.debian.org/u32q/benchmark.php?test=all&lang=jruby&lang2=yarv

- Charlie