cheat sheets.

SETUP                                               
=====                                               

  Install the gem:

    $ sudo gem install rack-contrib

  Edit config.ru:

    require 'rack/contrib'
    use Rack::Profiler if ENV['RACK_ENV'] == 'development'

  In a sinatra app:

    require 'rack/contrib'
    configure :development do
      use Rack::Profiler     
    end                      

  Default output is in call tree format, suitable for use with KCacheGrind.

  To get flat text output:

    use Rack::Profiler, :printer => :flat

  To get a text call graph

    use Rack::Profiler, :printer => :graph

  To get an HTML call graph:

    use Rack::Profiler, :printer => :graph_html


USAGE
=====

  For process time:

    http://localhost:4567/my_slow_action?profile=process_time

  For wallclock time:

    http://localhost:4567/my_slow_action?profile=wall_time

  For CPU time:

    http://localhost:4567/my_slow_action?profile=cpu_time