gistfile1.rbx

#!/usr/bin/env ruby
require 'rubygems'
require 'open-uri'
require 'nokogiri'
require 'benchmark'

content = open("http://railstips.org/assets/2008/8/9/timeline.xml").read

N = 100

ndoc = Nokogiri::XML(content)

Benchmark.bm do |x|
  x.report('nokogiri:css') do
    N.times do
      info = ndoc.search('status text').first.inner_text
      url = ndoc.search('user name').first.inner_text
      GC.start
    end
  end
end