From: "J. Wook" <9ruvie@...>
Date: 2007-05-04T14:26:13+09:00
Subject: Net::HTTP performance difference: FreeBSD vs. Ubuntu ?

Strange ruby network performance drop examined on Ubuntu.

I made a simple HTTP testing code like below.


redirect_url = "http://www.talk-with-hani.com/feed"
success_url  = "http://www.daum.net"
invalid_url  = "http://www.daauumm.net"
error_url    = "http://errorurl1234.tistory.com"

start_time = Time.now
downloaded = 0

5.times do

  begin
    uri = URI.parse(redirect_url)
    r = Net::HTTP.get_response(uri)
    c += r.body.size
  rescue Exception => e
    puts e.class
  end

  ... iterate for success_url, invalid_url, error_url

end

puts "Total: #{downloaded/1000} KB,  #{Time.now - start_time} seconds"



Result was... very strange.

                                  time
MacBook                 about 20 sec
FreeBSD6.1             about 11 sec
Ubuntu                   about 73 sec (What's wrong with it?????)

(ruby1.8.6, same h/w spec of FreeBSD and Ubuntu)


I couldn't find any configuration difference (dependent library, ruby
version... etc)

Why this strange performance drop occurs on Ubuntu?

Please help me to fix Ubuntu performance problem.

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