zomgfibers.rb

# Comment this out on JRuby 1.6.5 and the example will "work" long enough to break
# require 'fiber' is broken on JRuby 1.6.5
require 'fiber'

started_at = Time.now
100000.times do |n|
  if n % 1000 == 0
    time = Time.now
    puts "#{n} fibers (#{"%0.3f" % (time - started_at)} seconds)"
    started_at = time
  end
  
  Fiber.new { }.resume
end