gistfile1.rb

# ruby-1.8.6-ree profile_startup.rb process_time|allocations|memory
# kcachegrind profile_startup.memory.tree
require 'rubygems'
require 'ruby-prof'

ENV['RAILS_ENV'] = 'development'

mode = ARGV.shift || 'process_time'
RubyProf.measure_mode = RubyProf.const_get(mode.upcase)
RubyProf.start
require "#{File.dirname(__FILE__)}/config/environment"
results = RubyProf.stop

File.open("profile_startup.#{mode}.tree", 'w') do |out|
  RubyProf::CallTreePrinter.new(results).print(out)
end