Rack::Bug (GitHub - brynary/rack-bug: Debugging toolbar for Rack applications implemented as middleware) is a tool for profiling rails apps to find bottlenecks in the code.
It has a really nice HTML interface that you can access on the production server.
The problem is that I am running an app on Rails version 2.2.1 and Rack::Bug will not run on such an old version of Rails.
Can anyone recommend an equivalent plug-in for that version of rails?
thanks,
Lee
anoyone?
bump bump
Same here… I have an app running 2.2 and can’t find something similar to Rack::Bug.
At some point we had newrelic developer mode working so you might want to try that, just keep in mind that newer versions of newrelic will probably not work with rails 2.2.x
If I find something I will post it. 
ok, thanks, I am gonna try out the free 14 day trial of newrelic and see how it goes!
OK, I wasn't going to say anything because I haven't used Rack::Bug but if NewRelic (which I do use) is somewhat equivalent you might also find the rails-footnotes gem useful.
(<http://rubygems.org/gems/rails-footnotes>\)
HTH,
I have set up newrelic rpm and it is exactly what I was looking for.
Really in depth info about what is goin on in the code.
It has helped to me to find some places in the code that needed some tweaking and has helped reduce average response times.
I have done a quick search on footnotes, but still not quite sure what exactly it provides except for links back to the code? Are you saying it could be used alongside newrelic?
The information provided is similar, but no, there's probably no reason to use both. And obviously NewRelic offers more, especially if you get a higher-level paid account.
I will try our newrelic for now anyway thanks