Requires ruby-prof (sudo gem install ruby-prof) Takes a block and profiles the results of running the block 100 times. The resulting profile is written out to Merb.root/log/#{name}.html. min specifies the minimum percentage of the total time a method must take for it to be included in the result.

Example

__profile__("MyProfile", 5) do
  30.times { rand(10)**rand(10) }
  puts "Profile run"
end

Assuming that the total time taken for #puts calls was less than 5% of the total time to run, #puts won’t appear in the profilel report.

Source Code

# File merb/core_ext/kernel.rb, line 206
def __profile__(name, min=1)
  require 'ruby-prof' unless defined?(RubyProf)
  return_result = ''
  result = RubyProf.profile do
    100.times{return_result = yield}
  end
  printer = RubyProf::GraphHtmlPrinter.new(result)
  path = File.join(Merb.root, 'log', "#{name}.html")
  File.open(path, 'w') do |file|
   printer.print(file, {:min_percent => min,
                        :print_file => true})
  end
  return_result
end