Is it called a plug if you're not shilling your own stuff? Well, anyway, if you're interested in this, you might also want to check out the recorded talks from the recent RubyKaigi.Specifically, there's two really interesting talks on JIT: - @k0kubun's talk on why Ruby's JIT was slow - https://www.youtube.com/watch?v=db3GHHllRyQ This is about the MJIT engine built into MRI. - @maximecb's talk on Y