tracing require load times

somefile.rb

  
  module Kernel
    def require_with_trace(*args)
      start = Time.now.to_f
      @indent ||= 0
      @indent += 2
      require_without_trace(*args)
      @indent -= 2
      Kernel::puts "#{' '*@indent}#{((Time.now.to_f - start)*1000).to_i} #{args[0]}"
    end
    #alias_method_chain :require, :trace
    alias_method :require_without_trace, :require
    alias_method :require, :require_with_trace
  end