Profiling with ruby-prof

profiler.rb

require 'rubygems'
require 'ruby-prof'

def slideview_image_url(photo)
  if CDN_OPTIONS && CDN_OPTIONS[:s3_host_alias]
    hosts = Array.wrap(CDN_OPTIONS[:s3_host_alias])
    host  = hosts[photo.id % hosts.size]
    "http://#{host}/photos/images/#{photo.id}/search2.jpg"
  else
    "/system/images/#{photo.id}/search2/#{photo.image_file_name}"
  end
end

def property_search_images_json_for_slideview(properties)                                                                
  properties.collect_hash do |property|                                                                                  
    photos     = property.photos.sort! { |a,b| (a.default_photo ==  b.default_photo) ? 1 : -1 }
    image_urls = photos.collect {|photo| slideview_image_url(photo) }
    [property.id, image_urls]
  end.to_json                                                                                                            
end                                                                                                                      

properties = Property.find(:all, :limit => 10, :include => [:photos, :default_photo])

# force object instantiation 
properties.each do |p|
  puts 'x' if p.id.present?
end

# profile the code!!
RubyProf.start
  photos = property_search_images_json_for_slideview(properties)
result = RubyProf.stop

# show output
puts photos.inspect

printer = RubyProf::FlatPrinter.new(result)
printer.print(STDOUT, 0)