I would also love to see an application in production measured with NewRelic or something else and compare the results. A good way to test this would be to spin

I would also love to see an application in production measured with NewRelic or something else and compare the results. A good way to test this would be to spin up three servers. * 1 load balancer that plays round robin on the requests. * 1 server running MRI * 1 server running Rubinius Each with NewRelic installed and compare the A/B test that is taking place for a period of about a week of heavy usage. Obviously the gems that the rubinius application would have would be different than what the MRI gems would be. But the core of the application would remain the same. This would give me and others better insight as to how the two interpreters are running in a production.