Hi,
I am currently in my benchmarking cycle. I already use rawk to spot the action that take the most time and could be worked on a little bit.
But inside each action, which profiling tool do you use? I watched Ryan Bates screencast about script/performance/request, but the info spit out is not very friendly and most of it is irrelevant garbage.
Is there a good tool to work with? Does someone use FiveRun's TuneUp?
So I gave TuneUp a try, but I quickly reached its limits. Most of the time, it cannot track which step is sucking all the time in my action, so it's not very helpful, but the idea is very good and integration is excellent.
The problem is: the only package available is ruby-prof 0.6.0, but Rails 2.1.1 requires 0.6.1 not yet packaged.
The solution: download the source from github, then build the gem manually and install it.
Have fun 
Nobody does any profiling at all of their apps? Os there a so obvious tool for that which I am not aware of?
script/performance/request outputs result which is too verbose and has lots of irrelevant data.