gems_used

Gems included by the bundle:
  * activemodel (3.1.0.rc6)
  * activerecord (3.1.0.rc6)
  * activesupport (3.1.0.rc6)
  * addressable (2.2.6)
  * arel (2.2.1)
  * async-rack (0.5.1)
  * bcrypt-ruby (2.1.4)
  * builder (3.0.0)
  * bundler (1.0.18)
  * em-http-request (1.0.0)
  * em-socksify (0.1.0)
  * em-synchrony (1.0.0)
  * eventmachine (1.0.0.beta.3)
  * goliath (0.9.2 c8008ef)
  * http_parser.rb (0.5.2)
  * http_router (0.9.7)
  * i18n (0.6.0)
  * log4r (1.1.9)
  * multi_json (1.0.3)
  * mysql2 (0.3.7)
  * rack (1.3.2)
  * rack-accept-media-types (0.9)
  * rack-contrib (1.1.0)
  * rack-respond_to (0.9.8)
  * tzinfo (0.3.29)
  * url_mount (0.2.1)
  * yajl-ruby (0.8.3)

runner.rb

require 'rubygems'
require "bundler/setup"
require 'eventmachine'
require 'em-http'

start = Time.now
#Parallel requests
EventMachine.run do
  multi = EventMachine::MultiRequest.new
  200.times do |id|
    puts id
    http = EventMachine::HttpRequest.new("http://localhost:9000/echo_with_ar")
    req = http.get
    multi.add(id, req)
  end

  multi.callback do
    puts multi.responses[:succeeded]
    puts multi.responses[:failed]
    EventMachine.stop
  end
end

end_t = Time.now
puts "Elapsed: #{end_t - start}  secs"

#ruby runner.rb to invoke