[MacRuby] #1116: Yet another String performance issue

[MacRuby]

#1116: Yet another String performance issue
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 Reporter:  yasuimao@…            |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  blocker               |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
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 Another String performance issue.  Tested on a text file with 4360 lines
 (\n).

 {{{
 Test 1 - File.read("test.txt").split(/\n/)
 Test 2 - File.read("test.txt").split("\n")
 Test 1 - force_encoding - File.read("test.txt").force_encoding("UTF-
 16BE").split(/\n/)
 Test 2 - force_encoding - File.read("test.txt").force_encoding("UTF-
 16BE").split("\n".force_encoding("UTF-16BE"))

 Test 3 - File.read("test.txt").lines {}
 }}}



 {{{
 Ruby 1.8.7
 Test 1 - 0.0081  0.0078  0.0086
 Test 2 - 0.0078  0.0079  0.0079
 Test 3 - 0.0058  0.0053  0.0065

 Ruby 1.9.2
 Test 1 - 0.0089  0.0090  0.0089
 Test 2 - 0.0035  0.0035  0.0035
 Test 3 - 0.0036  0.0035  0.0035

 MacRuby 0.8 2011/01/16
 Test 1 - 0.026  0.039   0.023
 Test 2 - 0.019  0.018   0.018
 Test 3 - 0.023  0.020   0.026

 MacRuby 0.9 2011/01/16
 Test 1 -  0.021  0.021  0.021
 Test 2 - 23.51  23.55  23.50
 Test 3 - 23.43  23.38  23.35

 MacRuby 0.9 2011/01/16 - force_encoding
 Test 1 - 0.015  0.015  0.015
 Test 2 - 0.011  0.011  0.011
 }}}

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Ticket URL: <http://www.macruby.org/trac/ticket/1116>
MacRuby <http://macruby.org/>