>That's for a cold start. Once the application is initialized, it becomes way faster.
If one uses Unicorn in production there's no such thing as a `cold start` Ruby is not the JVM lest you run JRuby or Rubinius ofc :-)
I'm not sure that's accurate - most of Rails is lazily loaded now I believe, specifically to reduce start-up time. You can use a different strategy in production of course.
By default, Rails only does lazy loading in development mode.