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## benchmark require 'benchmark' total = (ENV['TOTAL'] || 1_000).to_i strings = Dir["spec/**/*_spec.rb"] numbers = Array.new(strings.size).fill { |i| strings[i].size } Benchmark.bmbm do |x| x.report("loop") do times = 0 while times < total size = numbers.size i = j = 0 while i < size while j < size j += 1 end i += 1 end times += 1 end end x.report("Fixnum#==") do times = 0 while times < total size = numbers.size i = j = 0 while i < size while j < size numbers[i] == numbers[j] j += 1 end i += 1 end times += 1 end end x.report("String#==") do times = 0 while times < total size = numbers.size i = j = 0 while i < size while j < size strings[i] == strings[j] j += 1 end i += 1 end times += 1 end end end ## ruby angelo:rubinius brian$ ruby -v ruby 1.8.6 (2007-09-24 patchlevel 111) [universal-darwin9.0] angelo:rubinius brian$ TOTAL=1_000 ruby string.rb Rehearsal --------------------------------------------- loop 1.510000 0.000000 1.510000 ( 1.540249) Fixnum#== 2.240000 0.000000 2.240000 ( 2.267833) String#== 2.250000 0.000000 2.250000 ( 2.274516) ------------------------------------ total: 6.000000sec user system total real loop 1.520000 0.010000 1.530000 ( 1.553980) Fixnum#== 2.240000 0.000000 2.240000 ( 2.278529) String#== 2.280000 0.010000 2.290000 ( 2.336008) ## with :string_equal primitive angelo:rubinius brian$ rm string.rbc; TOTAL=1_000 shotgun/rubinius string.rb Rehearsal --------------------------------------------- loop 0.290627 0.000000 0.290627 ( 0.290615) Fixnum#== 0.544032 0.000000 0.544032 ( 0.544017) String#== 0.614593 0.000000 0.614593 ( 0.614575) ------------------------------------ total: 1.449252sec user system total real loop 0.286488 0.000000 0.286488 ( 0.286496) Fixnum#== 0.555419 0.000000 0.555419 ( 0.555413) String#== 0.612422 0.000000 0.612422 ( 0.612424) ## with ByteArray#compare_bytes angelo:rubinius brian$ rm string.rbc; TOTAL=1_000 shotgun/rubinius string.rb Rehearsal ---------------------------------------------- Fixnum#== 0.741157 0.000000 0.741157 ( 0.741143) String#== 2.207268 0.000000 2.207268 ( 2.207269) ------------------------------------- total: 2.948425sec user system total real Fixnum#== 0.555471 0.000000 0.555471 ( 0.555461) String#== 2.160827 0.000000 2.160827 ( 2.160836)