Hi all,
Just wanted to put in a shameless plug for a new tool called PowerStation that we built for detecting performance issues in Rails applications. It is a static code analyzer that identifies and automatically suggests fixes for many performance issues in Rails apps. Our tool has been integrated into the RubyMine IDE and can also run as a command line tool as well. Please check out our blog post if you are interested. Feedback and pull requests are welcomed.
Thanks! Alvin