Rack Approach Benchmark: Class vs. Block vs. Method

bench.rb

require 'benchmark'

class App
  def call(env)
    [200, {'Content-Type' => 'text/html'}, ['ohai']]
  end
end
@object = App.new

@lambda = lambda do |env|
  [200, {'Content-Type' => 'text/html'}, ['ohai']]
end

@proc = Proc.new do |env|
  [200, {'Content-Type' => 'text/html'}, ['ohai']]
end

def app(env)
  [200, {'Content-Type' => 'text/html'}, ['ohai']]
end
@method = method(:app)

n = 1_000_000

Benchmark.bmbm do |bm|
  bm.report('object') do
    n.times { @object.call({}) }
  end
  
  bm.report('lambda') do
    n.times { @lambda.call({}) }
  end
  
  bm.report('proc') do
    n.times { @proc.call({}) }
  end
  
  bm.report('method') do
    n.times { @method.call({}) }
  end
end

output

[mbpro:~/documents/mkdynamic/labs]
→ ruby -v
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin10.7.0]

[mbpro:~/documents/mkdynamic/labs]
→ ruby speed.rb
Rehearsal ------------------------------------------
object   1.750000   0.010000   1.760000 (  1.758695)
lambda   1.910000   0.000000   1.910000 (  1.915731)
proc     1.930000   0.000000   1.930000 (  1.937481)
method   1.900000   0.010000   1.910000 (  1.905207)
--------------------------------- total: 7.510000sec

             user     system      total        real
object   1.770000   0.000000   1.770000 (  1.772592)
lambda   1.890000   0.000000   1.890000 (  1.895088)
proc     1.930000   0.010000   1.940000 (  1.935838)
method   1.920000   0.000000   1.920000 (  1.923905)