Ruby Markdown parser libraries benchmark

001-markdown-benchmark.rb

%w[rubygems open-uri benchmark kramdown bluecloth maruku rdiscount].each do |lib|
  require lib
end

n  = 1000
md = open('http://maruku.rubyforge.org/maruku.md').read

def parse_md(parser, md)
  parser.new(md).to_html
end

Benchmark.bm 15 do |x|
  x.report("Maruku")    { n.times { parse_md Maruku, md             } }
  x.report("Kramdown")  { n.times { parse_md Kramdown::Document, md } }
  x.report("Bluecloth") { n.times { parse_md BlueCloth, md          } }
  x.report("RDiscount") { n.times { parse_md RDiscount, md          } }
end

002-Benchmark Ruby 1.9.3

% ruby -v                                                                                                                                                                  
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.3.0]
% ruby markdown-benchmark.rb
                      user     system      total        real
Maruku           72.230000   0.950000  73.180000 ( 73.231086)
Kramdown         31.310000   0.290000  31.600000 ( 31.708552)
Bluecloth         0.910000   0.020000   0.930000 (  0.921067)
RDiscount         0.490000   0.000000   0.490000 (  0.496885)

003-Benchmark Rubinius 1.2.4

% ruby -v
rubinius 1.2.4 (1.8.7 release 2011-07-05 JI) [x86_64-apple-darwin11.4.0]
% ruby markdown-benchmark.rb

                     user     system      total        real
Maruku         133.589676   0.377935 133.967611 (125.178804)
Kramdown        92.103726   0.169284  92.273010 ( 89.951820)
Bluecloth        0.530919   0.009140   0.540059 (  0.532022)
RDiscount        0.481381   0.001117   0.482498 (  0.482841)

004-Benchmark Rubinius 2.0.0dev

% ruby -v
rubinius 2.0.0dev (1.8.7 73298786 yyyy-mm-dd JI) [x86_64-apple-darwin11.4.0]
% ruby markdown-benchmark.rb
                     user     system      total        real
Maruku         128.114079   0.622055 128.736134 (117.085048)
Kramdown       123.552663   0.334006 123.886669 (119.782310)
Bluecloth        0.708629   0.004557   0.713186 (  0.708668)
RDiscount        0.839977   0.002308   0.842285 (  0.859429)

005-Benchmark JRuby 1.6.7.2

% ruby -v
jruby 1.6.7.2 (ruby-1.9.2-p312) (2012-05-01 26e08ba) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_31) [darwin-x86_64-java]
% ruby markdown-benchmark.rb
                     user     system      total        real
Maruku          93.493000   0.000000  93.493000 ( 93.494000)
Kramdown        30.954000   0.000000  30.954000 ( 30.954000)
Bluecloth        1.028000   0.000000   1.028000 (  1.028000)
RDiscount        1.077000   0.000000   1.077000 (  1.077000)