[MacRuby] #1089: Performance: Regexp#match is slow.

31 Dec 2010

      #1089: Performance: Regexp#match is slow.
----------------------------------+-----------------------------------------
 Reporter:  watson1978@…          |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  blocker               |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
----------------------------------+-----------------------------------------
 Test Script:
 {{{
 #!ruby
 require 'benchmark'

 Benchmark.bm do |x|
   x.report {
     1000.times do
       sum = 0
       1000.times do |i|
         s = sprintf("%d", i)
         /^10$/.match("100")
       end
     end
   }
 end
 }}}

 Result:
 {{{
 $ ruby -v bm_regexp.rb
 ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]
       user     system      total        real
   3.160000   0.000000   3.160000 (  3.163137)

 $ ruby19 -v bm_regexp.rb
 ruby 1.9.2p136 (2010-12-25 revision 30365) [x86_64-darwin10.5.0]
       user     system      total        real
   3.660000   0.010000   3.670000 (  3.661313)

 $ macruby05 -v bm_regexp.rb
 MacRuby version 0.5 (ruby 1.9.0) [universal-darwin10.0, x86_64]
       user     system      total        real
  16.290000   0.310000  16.600000 ( 12.663407)

 $ macruby06 -v bm_regexp.rb
 MacRuby version 0.6 (ruby 1.9.0) [universal-darwin10.0, x86_64]
       user     system      total        real
  28.040000   1.370000  29.410000 ( 23.561619)

 $ macruby07 -v bm_regexp.rb
 MacRuby 0.7 (ruby 1.9.2) [universal-darwin10.0, x86_64]
       user     system      total        real
  26.260000   1.240000  27.500000 ( 21.986473)

 $ macruby08 -v bm_regexp.rb
 MacRuby 0.8 (ruby 1.9.2) [universal-darwin10.0, x86_64]
       user     system      total        real
  25.630000   1.250000  26.880000 ( 21.451434)

 $ macruby -v bm_regexp.rb
 MacRuby 0.9 (ruby 1.9.2) [universal-darwin10.0, x86_64]
       user     system      total        real
  22.690000   0.990000  23.680000 ( 18.992711)
 }}}

 In comparison with MacRuby 0.5, nearly 1.5 times is slow.

-- 
Ticket URL: <http://www.macruby.org/trac/ticket/1089>
MacRuby <http://macruby.org/>