builder library is slower in JRuby than in MRI
----------------------------------------------

                 Key: JRUBY-3211
                 URL: http://jira.codehaus.org/browse/JRUBY-3211
             Project: JRuby
          Issue Type: Bug
          Components: Performance
            Reporter: Charles Oliver Nutter


We start to do better after a long warmup like 20k, but a shorter warmup (like 
5k) and we're still pretty slow. Seems like there's something we could improve 
here.

{noformat}
require "rubygems"
require "builder"
 
require "rbench"
 
20_000.times do
  b = Builder::XmlMarkup.new
  b.date do
    b.year "2008"
    b.month "December"
    b.day "2"
  end
  
end
 
RBench.run(20_000) do
  report("simple") do
    b = Builder::XmlMarkup.new
    b.date do
      b.year "2008"
      b.month "December"
      b.day "2"
    end
  end
end
{noformat}

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