gistfile1.rb

require 'benchmark'
require 'rubygems'
require 'publisher'

COUNT = 10_000_000

class Eventer
  extend Publisher

  def initialize
    @ev_one_count = 0
  end

  has_events :ev_one

  def ev_one
    @ev_one_count += 1
  end

end

class Firer
  extend Publisher
  can_fire :ev_one

  def run_test
    COUNT.times { fire :ev_one }
  end
end

class Caller
  def initialize(eventer)
    @eventer = eventer
  end

  def run_test
    COUNT.times { @eventer.ev_one }
  end
end

Benchmark.bm(20) do |x|
  x.report("Publisher events") { f = Firer.new; ev = Eventer.new; f.run_test }
  x.report("Calling straight") { ev = Eventer.new; c = Caller.new(ev); c.run_test }
end

gistfile2.sh

roelofs@trillian ~/tmp $ ruby publisher_test.rb
                          user     system      total        real
Publisher events     36.870000   0.010000  36.880000 ( 37.352613)
Calling straight      6.740000   0.000000   6.740000 (  6.835743)

roelofs@trillian ~/tmp $ ruby19 -v
ruby 1.9.1p0 (2009-01-30 revision 21907) [i686-linux]

roelofs@trillian ~/tmp $ ruby19 publisher_test.rb
                          user     system      total        real
Publisher events     13.720000   0.080000  13.800000 ( 15.669221)
Calling straight      3.100000   0.020000   3.120000 (  3.532273)