Benchmark for Ruby RSS parsers

benchmark_rss.rb

# Becnhmark for Ruby RSS parsers
# Gems: syndication, rubyrss, simple-rss, feedtools

require 'benchmark'
require 'rubygems'
require 'open-uri'

require 'rss'
require 'simple-rss'
require 'feed_tools'
require 'syndication/rss'
require 'feed-normalizer'



def process_items( channel )
  for i in channel.items do
    i.link
    i.title
    i.description
  end
end

def process_entries( channel )
  for i in channel.entries do
    i.url
    i.title
    i.description
  end
end

def test_feed( x, fn )
  feed_uri = 'http://localhost/' + fn + '.xml'

  x.report(fn +  ' std:') do
    rss = RSS::Parser.parse open( feed_uri )
    process_items( rss.channel )
  end
  x.report(fn +  ' simple-rss:') do
    rss = SimpleRSS.parse open( feed_uri )
    process_items( rss )
  end
  x.report(fn +  ' feed_tools:') do
    rss = FeedTools::Feed.open( feed_uri )
    process_items( rss )
  end  
  x.report(fn +  ' syndication:') do
    rss = Syndication::RSS::Parser.new.parse open( feed_uri )
    process_items( rss )
  end
  x.report(fn +  ' feednormalizer:') do
    rss = FeedNormalizer::FeedNormalizer.parse open( feed_uri )
    process_entries( rss )
  end
end

Benchmark.bm( 30 ) do |x|
  test_feed( x, 'feed1' )
  test_feed( x, 'feed2' )
end