Created
June 8, 2012 12:13
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| require 'benchmark' | |
| puts "#{RUBY_ENGINE rescue ''} #{RUBY_ENGINE == 'jruby' ? JRUBY_VERSION : RUBY_VERSION}" | |
| def a ; "abc"*100 ; end | |
| def b ; "def"*100 ; end | |
| n = 1000000 | |
| Benchmark.bm(12) do |x| | |
| x.report('"#{a}#{b}"') { n.times { "#{a}#{b}" } } | |
| x.report('"" + a + b') { n.times { "" + a + b } } | |
| x.report('"" << a << b') { n.times { "" << a << b } } | |
| end |
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| # rvm all do ruby cat.rb | |
| jruby 1.3.1 | |
| user system total real | |
| "#{a}#{b}" 1.405000 0.000000 1.405000 ( 1.351000) | |
| "" + a + b 0.920000 0.000000 0.920000 ( 0.920000) | |
| "" << a << b 0.908000 0.000000 0.908000 ( 0.908000) | |
| jruby 1.6.1 | |
| user system total real | |
| "#{a}#{b}" 1.150000 0.000000 1.150000 ( 1.108000) | |
| "" + a + b 0.984000 0.000000 0.984000 ( 0.984000) | |
| "" << a << b 0.952000 0.000000 0.952000 ( 0.953000) | |
| jruby 1.6.4 | |
| user system total real | |
| "#{a}#{b}" 1.198000 0.000000 1.198000 ( 1.147000) | |
| "" + a + b 0.903000 0.000000 0.903000 ( 0.903000) | |
| "" << a << b 0.902000 0.000000 0.902000 ( 0.902000) | |
| ruby 1.8.7 | |
| user system total real | |
| "#{a}#{b}" 4.040000 0.010000 4.050000 ( 4.069462) | |
| "" + a + b 4.440000 0.180000 4.620000 ( 4.660303) | |
| "" << a << b 4.240000 0.010000 4.250000 ( 4.261220) | |
| stringcat.rb:2: uninitialized constant RUBY_ENGINE (NameError) | |
| stringcat.rb:2: uninitialized constant RUBY_ENGINE (NameError) | |
| ruby 1.9.2 | |
| user system total real | |
| "#{a}#{b}" 2.460000 0.210000 2.670000 ( 2.681895) | |
| "" + a + b 2.480000 0.120000 2.600000 ( 2.596685) | |
| "" << a << b 2.530000 0.190000 2.720000 ( 2.718471) | |
| ruby 1.9.2 | |
| user system total real | |
| "#{a}#{b}" 2.160000 0.160000 2.320000 ( 2.320706) | |
| "" + a + b 2.280000 0.180000 2.460000 ( 2.470008) | |
| "" << a << b 2.460000 0.170000 2.630000 ( 2.632798) | |
| ruby 1.9.3 | |
| user system total real | |
| "#{a}#{b}" 2.540000 0.150000 2.690000 ( 2.698078) | |
| "" + a + b 2.740000 0.180000 2.920000 ( 2.937345) | |
| "" << a << b 2.760000 0.260000 3.020000 ( 3.019918) | |
| ruby 1.9.3 | |
| user system total real | |
| "#{a}#{b}" 2.630000 0.150000 2.780000 ( 2.790978) | |
| "" + a + b 2.790000 0.200000 2.990000 ( 2.993584) | |
| "" << a << b 2.880000 0.240000 3.120000 ( 3.145599) |
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