Nokogiri xpath benchmark.rb

xml = "<bla>" +
              10000.times.collect { "<item />" }.join("") +
              "</bla>"

      puts( "elapsed time (xpath): " + Benchmark.realtime do
             Nokogiri::XML(xml).root.search("./item")
            end.to_s)

      puts( "elapsed time: " + Benchmark.realtime do
              Nokogiri::XML(xml).root.children.find_all do |cld|
               cld.name == "item"
             end
            end.to_s)