$ command line cheat sheets
Cheat Sheet Title: [ no_spaces_alphanumeric_only ]
Cheat Sheet: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
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