rails/rails — pull request #5387 by panthomakos (2012-03-12 06:32:36+00:00)
Title: Improved ActiveSupport::Autoload Performance

`ActiveSupport::Autoload#autoload` performance is improved in the default case where a path is present. Since the full path name is not generated, it isn't necessary to determine the full constant name either. This results in a 3x performance gain and reduces the number of Ruby objects generated. For a full benchmark check [this gist](https://gist.github.com/2020228).