benchmark to measure CGI::parse()

bench_parse_qs.rb

# -*- coding: utf-8 -*-

###
### benchmark to measure CGI::parse()
###

require 'rubygems'
require 'benchmarker'


require 'cgi'
name = '涼宮ハルヒ'
comment = 'ただの人間には興味ありません。'
query = "comment.name=#{CGI.escape(name)}&comment.body=#{CGI.escape(comment)}"


class CGI

  def CGI::parse1(query)
    params = {}
    query.split(/[&;]/n).each do |pairs|
      key, val = pairs.split(/=/, 2) \
           .collect {|v| CGI::unescape(v) }
      (params[key] ||= []) << val
    end
    params
  end

  def CGI::parse2(query)
    params = {}
    query.split(/[&;]/n).each do |pairs|
      key, val = pairs.split(/=/, 2)
      key = CGI::unescape(key)
      val = CGI::unescape(val)
      (params[key] ||= []) << val
    end
    params
  end

  def CGI::parse3(query)
    params = {}
    query.split(/[&;]/n).each do |pairs|
      key, val = pairs.split(/=/, 2)
      key = CGI::unescape(key) if key =~ /%/
      val = CGI::unescape(val)
      (params[key] ||= []) << val
    end
    params
  end

end


nloop = 100*1000
Benchmarker.new(:cycle=>5, :extra=>1) do |bm|

  bm.task("CGI::parse1()") do
    nloop.times { CGI::parse1(query) }
  end

  bm.task("CGI::parse2()") do
    nloop.times { CGI::parse2(query) }
  end

  bm.task("CGI::parse3()") do
    nloop.times { CGI::parse3(query) }
  end

end

__END__

# benchmarker.rb:   release 0.0.0
# RUBY_VERSION:     1.8.7
# RUBY_PATCHLEVEL:  334
# RUBY_PLATFORM:    i686-darwin10.6.0
#
# ## Ranking                          real
# CGI::parse3()                     5.5837 (100.0%) ********************
# CGI::parse2()                     5.8492 ( 95.5%) *******************
# CGI::parse1()                     6.1806 ( 90.3%) ******************


# benchmarker.rb:   release 0.0.0
# RUBY_VERSION:     1.9.2
# RUBY_PATCHLEVEL:  180
# RUBY_PLATFORM:    x86_64-darwin10.6.0
#
# ## Ranking                          real
# CGI::parse3()                     6.7640 (100.0%) ********************
# CGI::parse2()                     7.2005 ( 93.9%) *******************
# CGI::parse1()                     7.3592 ( 91.9%) ******************