Backport #5592: ruby-1.9.3-p0 mswin IO#write still slower than 1.9.2

• Status: Closed
• Assignee: -

[arton (Akio Tajima)]

In spite of Backport #5585, ruby-1.9.3-p0 is 10 times slower than 1.9.2.

#-test script
t=Time.new
str = '0123456789'*10
open('test.txt','wb') do |f|
100000.times do
f.write str
end
end
puts "Write:#{Time.new-t}(s)"

ruby 1.9.2p290 (2011-07-09) [i386-mswin32_100]
Write:0.068004(s)

ruby 1.9.3p0 (2011-10-30) [i386-mswin32_100] # after #5585 applied
Write:0.914052(s)

I've reviewd r33667(trunk) and accepted its effectiveness. Thanks usa for your good job.
After the patch was applied, the test result:

ruby 1.9.3p0 (2011-10-30) [i386-mswin32_100]
Write:0.069004(s)

ruby 1.9.3p0 (2011-10-30) [x64-mswin64_100]
Write:0.066004(s)

Please backport the patch. Thanks.

[usa (Usaku NAKAMURA)]

• Status changed from Open to Closed