Stopwatch

Show the time that was necessary to render your page and the amount of queries that were executed.

Just add the following to your development group and you are good to go:

gem 'stopwatch'

Every page will now display the duration in the upper right corner and the amount of (non-cached) queries.

I was inspired by an article on the Coding Horror blog where they talk about how adding a small box that displays page speed motivated them to not forget about the performance of their pages.

Some excerpts:

The simple act of putting a render time in the upper right hand corner of every page we serve forced us to fix all our performance regressions and omissions.

In fact, with the render time appearing on every page for everyone on the dev team, performance became a point of pride. We had so many places where we had just gotten a little sloppy or missed some tiny thing that slowed a page down inordinately.

I could especially identify with the last one and I wanted to quickly get this gem out there to see if I could recreate that same effect.

• It removes etags so we can display it fresh every page load, otherwise the response would get cached by the browser because Rails would return a 304 Not Modified and you wouldn't see any changes on page refresh.

• Basic configuration

Paul Engel For the name!

Copyright (C) 2011 by Mark Mulder

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