FYI: The great computer language shootout is now being hosted by one of 
the Debian groups.  It's been updated to use the latest 
compilers/interpreters (Ruby 1.8.1 is in there now).

You can find it here:
http://shootout.alioth.debian.org/index.php

It's interesting that Python has now moved ahead of Perl in performance - 
in the older shootout Python was still slower than Perl.  Ruby is 
somewhere near the middle of the scale ( slower than both Perl and 
Python).

Phil