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require 'benchmark' | |
n = 1000000 | |
words = ["string", :symbol] | |
Benchmark.bm(20) do |x| | |
x.report("join('_')") do | |
n.times do | |
res = words.map{|s| s}.join("_") | |
end | |
end | |
x.report("join()") do | |
n.times do | |
res = words.map{|s| "#{s}_"}.join | |
end | |
end | |
x.report('<< "_"') do | |
n.times do | |
res = words.inject("") {|string, p| string << "#{p}_"} | |
end | |
end | |
end |
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rvm system,1.8.7,rbx-head,1.9.2 comp.rb | |
info: system: ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0] | |
user system total real | |
join('_') 2.200000 0.000000 2.200000 ( 2.272801) | |
join() 3.140000 0.010000 3.150000 ( 3.166814) | |
<< "_" 4.660000 0.000000 4.660000 ( 4.678321) | |
info: 1.8.7 (ruby-1.8.7-p302): ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-darwin10.4.0] | |
user system total real | |
join('_') 2.390000 0.000000 2.390000 ( 2.390423) | |
join() 3.250000 0.000000 3.250000 ( 3.270108) | |
<< "_" 4.620000 0.000000 4.620000 ( 4.632467) | |
info: rbx-head: rubinius 1.0.1 (1.8.7 0d440bb0 2010-06-03 JI) [x86_64-apple-darwin10.4.0] | |
user system total real | |
join('_') 6.053744 0.016591 6.070335 ( 5.805713) | |
join() 5.661479 0.010880 5.672359 ( 5.663749) | |
<< "_" 3.408194 0.009164 3.417358 ( 3.390956) | |
info: 1.9.2 (ruby-1.9.2-p0): ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.4.0] | |
user system total real | |
join('_') 1.760000 0.000000 1.760000 ( 1.756008) | |
join() 2.170000 0.010000 2.180000 ( 2.188050) | |
<< "_" 1.990000 0.000000 1.990000 ( 1.995551) |
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