This talk was one of the highlights of the conference. At the talk, they showed performance benchmarks that included running several things as much as 117x as fast as the default Ruby interpreter that is in use by most Rails installations today. The fact that it's built on this commercial-grade Gemstone platform that has been used for years for high-performance production Smalltalk applications just adds to its credibility.

One of the reasons this is exciting is that many Ruby/Rails programmers have suffered from the criticism that their platform is elegant and fast to develop in, but that it doesn't scale well. MagLev sure looked like it could go a long way toward addressing those concerns. And since it hits Ruby right at the VM level, it is potentially useful to anyone running any kind of Ruby app whether on Rails or not.

Of course, we'll see when it's done...