This gem is a middleware which add some instrumentation details like db runtime, view runtime, number of sqls fired on each request in the response headers.

• X-View-Runtime
• X-DB-Runtime
• X-DB-Query-Count

Install the latest stable release:

[sudo] gem install rails_instrument

In Rails >= 3, add it to your Gemfile:

gem 'rails_instrument'

• Create chrome extension to show this information inline in the page. Implemented as html fragment added by the middleware to html response.
• Add helper methods for tests. Ex: The number of sqls fired can be asserted. - wip
• Add test coverage.