[MacRuby-devel] String performance (yet another)

[Yasu Imao]

Hi,

I found another String performance issue, which is different from #1077.  I used the same 8092 words English text in UTF-8 used in #1077.

The latest nightly (2011/01/16) is about 6 times slower than MacRuby 0.8, which was as fast as 1.9.2.  

I'm just wondering if I should file this for 0.9 or for 'later'.


text = File.read("test.txt")
#text = File.read("test.txt").force_encoding("UTF-16BE")
1000.times do |i|
  a = text[i,i+30]
end


*Ruby 1.8.7				0.0019	0.0018	0.0017
Ruby 1.9.2				0.029	0.030	0.029
MacRuby 0.8				0.028	0.025	0.028
MacRuby 0.9 2011/01/16	0.18		0.17		0.18
MacRuby 0.9 2011/01/16	0.0023	0.0029	0.0021
(force_encoding)