Block declaration benchmark

block_declaration.rb

require "benchmark"

def speak_with_block_and_yield(&block)
  yield if block_given?
end

def speak_with_block_and_call(&block)
  block.call if block_given?
end

def speak_with_proc_and_call(block)
  block.call
end

def speak_without_block_and_yield
  yield if block_given?
end

n = 1_000_000
Benchmark.bmbm do |x|
  x.report("&block + yield") do
    n.times { speak_with_block_and_yield { "ook" } }
  end
  x.report("&block + call") do
    n.times { speak_with_block_and_call { "ook" } }
  end
  x.report("proc + call") do
    proc = Proc.new { "ook" }
    n.times { speak_with_proc_and_call(proc) }
  end
  x.report("yield") do
    n.times { speak_without_block_and_yield { "ook" } }
  end
end

RESULTS_2_0_0_p247

Rehearsal --------------------------------------------------
&block + yield   0.960000   0.050000   1.010000 (  1.017942)
&block + call    1.080000   0.050000   1.130000 (  1.122803)
proc + call      0.270000   0.330000   0.600000 (  0.606673)
yield            0.250000   0.000000   0.250000 (  0.244251)
----------------------------------------- total: 2.990000sec

                     user     system      total        real
&block + yield   1.000000   0.050000   1.050000 (  1.040755)
&block + call    1.090000   0.040000   1.130000 (  1.133808)
proc + call      0.260000   0.000000   0.260000 (  0.260821)
yield            0.230000   0.000000   0.230000 (  0.228444)

RESULTS_jruby_1_7_2

Rehearsal --------------------------------------------------
&block + yield   1.590000   0.050000   1.640000 (  0.877000)
&block + call    1.280000   0.010000   1.290000 (  0.742000)
proc + call      0.640000   0.000000   0.640000 (  0.364000)
yield            0.710000   0.010000   0.720000 (  0.374000)
----------------------------------------- total: 4.290000sec

                     user     system      total        real
&block + yield   0.210000   0.000000   0.210000 (  0.204000)
&block + call    0.310000   0.000000   0.310000 (  0.311000)
proc + call      0.200000   0.000000   0.200000 (  0.197000)
yield            0.160000   0.000000   0.160000 (  0.154000)

RESULTS_ruby_1_9_3_p385

Rehearsal --------------------------------------------------
&block + yield   1.030000   0.040000   1.070000 (  1.083940)
&block + call    1.150000   0.030000   1.180000 (  1.178381)
proc + call      0.290000   0.010000   0.300000 (  0.287907)
yield            0.250000   0.000000   0.250000 (  0.254696)
----------------------------------------- total: 2.800000sec

                     user     system      total        real
&block + yield   0.980000   0.010000   0.990000 (  0.988161)
&block + call    1.120000   0.000000   1.120000 (  1.129818)
proc + call      0.280000   0.000000   0.280000 (  0.279563)
yield            0.240000   0.000000   0.240000 (  0.248076)