http_parser.rb benchmark

benchmark.rb

require 'rubygems'
require 'http/parser'   # needs http_parser.rb gem
require 'benchmark/ips' # needs benchmark_suite gem

request = <<-REQUEST
GET / HTTP/1.1
Host: www.example.com
Connection: keep-alive
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.78 S
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

REQUEST
request.gsub!(/\n/m, "\r\n")

Benchmark.ips do |ips|
  ips.report("instance") { Http::Parser.new }
  ips.report("parsing")  { Http::Parser.new << request }
end

results

╭─tony@wintermute  ~ ‹ruby-1.9.3› 
╰─$ ruby http_parser_benchmark.rb 
            instance  1296541.0 (±7.0%) i/s -    6483620 in   5.019923s (cycle=45340)
             parsing   103330.0 (±3.6%) i/s -     518378 in   5.024443s (cycle=8498)

╭─tony@wintermute  ~ ‹jruby-1.6.7› 
╰─$ ruby http_parser_benchmark.rb 
            instance  1379087.6 (±4.3%) i/s -    6878868 in   4.998682s (cycle=25572)
             parsing    54545.4 (±2.1%) i/s -     273680 in   5.019850s (cycle=3421)

# Running the unreleased code from HEAD with Charlie's tune-ups looks better
            instance  1265907.7 (±6.6%) i/s -    6294810 in   4.996826s (cycle=28355)
             parsing    69250.0 (±3.7%) i/s -     346098 in   5.005262s (cycle=4677)

╭─tony@wintermute  ~ ‹rbx-head› 
╰─$ ruby http_parser_benchmark.rb
            instance   515147.6 (±40.1%) i/s -    1671122 in   5.172464s (cycle=20134)
             parsing    21778.8 (±7.2%) i/s -     110160 in   5.082587s (cycle=1836)