Load tester

gistfile1.txt

#!/usr/bin/env ruby

require 'net/http'
URL_LIST = [
  [:get, 'http://quickwebdesign.net'],
  [:post, 'http://retrodude.com']
].map { |action, url| [action, URI.parse(url)] }

POST_DATA = -> do
  { :name => "foo", :what => 'ho', :interesting => rand(999999) }
end


def simple_benchmarker
  first_time = previous_time = Time.now
  benchmarks = []
  activity = ->(name) { benchmarks << [name, Time.now] }
  activity[:started]
  yield activity
  activity[:finished]
  benchmarks.each do |act, time|
    puts "%30s  \t+%4d seconds  \t (+%4d seconds total)  \t%s" % [ act.to_s[0..20], time - previous_time, time - first_time, time]
    previous_time = time
  end
end



# Usage example

simple_benchmarker do |activity|
  puts "Running tests, please wait"
  URL_LIST.each do |action, uri|
    my_threads = []
    puts uri.to_s
    200.times do |num|
      my_threads << Thread.new do
        if action == :post
          Net::HTTP.get_response uri
        else
          Net::HTTP.post_form uri, POST_DATA[]
        end
      end
    end
    my_threads.map { |thread| thread.join ; print '.' }
    puts
    activity[uri.hostname]
  end
  puts
end

Usage instructions:

1. Edit lines 5-6 to add URLs to test. Note that this currently doesn't test POSTs does test posts, not tested it though
2. The value on line 36 may be tweaked - bear in mind there are limits to the number of connections you are allowed simultaneously. Feel free to add duplicate records in the array from point 1)
3. Warm up your servers - the first time you run this script may take longer depending on server config / most recent caches
4. Try it from different locations over different network connections, to ensure you aren't the victim of throttling etc
5. This will not check whether the return was valid. Your server may have gone down and be returning 500 errors - we do not check for this (yet)