Profiling controllers

rubyonrails-talk
1

Guys,

I’ve built some fairly complex controllers and I’d like to profile them. What’s the best way to go about this? I suspect the profiling script shipped with Rails doesn’t work well with controllers. I looked at railsbench, but it doesn’t work well because the controllers use acts_as_authenticated.

What does everyone use?

Thanks!

Jake

2

Jake Cutter wrote:

I've built some fairly complex controllers and I'd like to profile them. What's the best way to go about this?

This probably isn't the *best* way to go about it, but for a quick hack to get some results you could try this:

1. Add

require 'profiler'

at the top of your 'whatever_controller.rb'.

2. After the 'def my_action' line of the action you want to profile, add

Profiler__::start_profile

3. At the end of the action, add

Profiler__::stop_profile Profiler__::print_profile(File::new("#{RAILS_ROOT}/log/profiler.log", 'w'))

Then when you run that action in your browser, it'll write a file into log/profiler.log that contains a profile for the controller part of that action.

Quick and dirty, but maybe it'll do the job (or inspire you to write something nicer!).

Chris