From: Regis d'Aubarede <regis.aubarede@...>
Date: 2010-12-14T22:34:24+09:00
Subject: Ruby 1.9.2 : Io performance when application use multithread

Hello,

The file attachment is an simple script for measure performance
between client TCP and server, in Mbyte/s.

With Ruby 1.9.2, when the server run in multi thread
( Thread.new(serv.accept()) {...} ) the script  give
a very poor transfer rate ( 3Mbyte on connection on localhost ).

When none-multi thread, performance is good :
same as jruby and MRI ( 470 Mbyte/s )
(ironRuby give a stange 110 Mbyte/s).

Usage :
>ruby gbits.rb server 4040      #  server (monothread)
>ruby gbits.rb server 4040 t    #  server (multihread)

>ruby gbits.rb client 127.0.0.1 4040 10  # 10=> 10 MB data length

OS:    Windows 7
Proc:  core i7, 1 Gbps ethernet
Ruby:  1.9.2dev (2010-07-02) [i386-mingw32]
jruby: 1.5.0
ir:    1.1.0.0 on .NET 4.0.30319.1
ruby:  1.8.6


Tested on Linux
 Ubuntu 10.4 (same machine with Virtalbox)
 ruby 1.9.1p378 (2010-01-10 revision 26273) [i486-linux]

server threaded : 844 MB/s
server non-threaded: 989 MB/s
same delta with jruby

thanks
Regis

Attachments:
http://www.ruby-forum.com/attachment/5547/gbits.rb


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