title: What tools do you recommend to profile Rails apps?
body: <p>I've been looking for profiling tools for Rails for a while. I'm currently playing and testing ruby-prof and railsbench, but I kinda frustrated with the amount of tweaking and mangling required to make then work.</p>
  
  <p>Althought I don't mind (much) the tweaking, I'd like to know if is there any other, more straight-forward and easy to use, tools to profile a Rails app? Which tools you recommend?</p>