gistfile1.txt

#!/usr/bin/env ruby

require "rubygems"
require "bundler/setup"
require "celluloid/autostart"
require "benchmark/ips"

class BenchmarkingActor
  include Celluloid

  def initialize
    @condition = Condition.new
  end

  def example_method; end

  def finished
    @condition.signal
  end

  def wait_until_finished
    @condition.wait
  end
end

example_actor = BenchmarkingActor.new
mailbox = Celluloid::Mailbox.new

latch_in = Queue.new
latch_out = Queue.new
latch = Thread.new do
  loop do
    n = latch_in.pop
    for i in 0..n; mailbox.receive; end
    latch_out << :done
  end
end

Benchmark.ips do |ips|
  ips.report("spawn")       { BenchmarkingActor.new.terminate }

  ips.report("calls")       { example_actor.example_method }

  ips.report("async calls") do |n|
    waiter = example_actor.future.wait_until_finished

    (n - 1).times { example_actor.async.example_method }
    example_actor.async.finished

    waiter.value
  end

  ips.report("messages") do |n|
    latch_in << n
    for i in 0..n; mailbox << :message; end
    latch_out.pop
  end
end


-------------------------
Benchmarking Results
-------------------------

               spawn       419 i/100ms
               calls      1319 i/100ms
         async calls       682 i/100ms
            messages      6853 i/100ms
-------------------------------------------------
               spawn     4413.2 (±7.9%) i/s -      22207 in   5.063493s
               calls    14054.2 (±12.5%) i/s -      69907 in   5.061426s
         async calls    26224.3 (±21.9%) i/s -     122760 in   5.015581s
            messages   470327.4 (±13.3%) i/s -    2302608 in   5.010365s

Looks good.