From: mrp@...
Date: 2001-10-08T19:21:59+09:00
Subject: [ruby-talk:22225] ruby-gtk: freq of mouse events: linux vs win nt


hi,

i'm using ruby-gtk in a paint-like program.  on a 400MHz linux machine
i can receive up to 150 mouse motion events per second, but running
the code under Win NT 4.0 on a 800MHz machine this drops to between 10-20
per second.  running on an old p130 also gets 20 per second!

on the 800 machine, the performance meter hardly gets above 1%.  on
the p130, it gets to 10%.

here's the code i used to measure this.

#!/usr/local/bin/ruby 

require 'gtk'
class MouseSpeedWindow < Gtk::DrawingArea
  def initialize
    super
    signal_connect("button_press_event")   { |w,e| pressed(w,e) }
    signal_connect("button_release_event") { |w,e| released(w,e) }
    signal_connect("motion_notify_event")  { |w,e| dragged(w,e) }
    set_events(Gdk::BUTTON_PRESS_MASK |
	       Gdk::BUTTON_RELEASE_MASK |
	       Gdk::BUTTON1_MOTION_MASK 
# |	       Gdk::POINTER_MOTION_HINT_MASK
	       )
  end
  def pressed(widget, ev)
  #  widget.window.get_pointer
    @strokeStartTime = Time.now
    @points = 1
    true
  end

  def dragged( widget, ev)
   # widget.window.get_pointer
    @points+=1
    true
  end

  def released(widget, ev)
    #widget.window.get_pointer
    sec = (Time.now.to_i - @strokeStartTime.to_i).to_f 
    puts "stroke : #{ @points.to_f / sec}"
    true
  end
end

  window = Gtk::Window.new(Gtk::WINDOW_TOPLEVEL)
  window.signal_connect("delete_event") { exit }
  window.signal_connect("destroy_event") { exit }
  window.add( MouseSpeedWindow.new )
  window.show_all
  window.set_default_size( 640,480 )
  window.set_uposition( 0,0 )
  Gtk::main()

===========
i'm using the windows 1.6.5 build from here:
http://www.ruby-lang.org/~eban/ruby/binaries/djgpp/
and 1.6.4 under linux (rh7.0)

questions:  
 why is there such a big difference?
 is there anything i can do to speed it up under windows?

thanks,
martin.