I’m excited about this work. Having a faster Ruby would be some wonderful icing on the cake. But, for me, using Ruby (and Rails) has always been about optimizing for developer hours over system performance. IMO Ruby is not a race horse, but it’s plenty “fast”. The real value is how quickly my team can iterate, and how enjoyable the process is.
Languages like Smalltalk or Lisp can have it both ways, the problem with Ruby is the manpower to have a comparable JIT available, although MJIT isn't the only one already available.
...Cincom is the largest commercial provider of Smalltalk in the world, with twice as many partners and customers than all other commercial providers combined."
