> So what I'm asking for is a link to some ruby-specific optimisation tips.

Avoid creating new objects, e.g. re-use strings and arrays, or modify 
them in place when possible, especially large ones.

Use built-in iterators as much as possible.

Pray for YARV!  :)

-- 
Glenn Parker | glenn.parker-AT-comcast.net | <http://www.tetrafoil.com/>