wondershaper/index.html

   1 <html>
   2 <head><title>Wonder Shaper</title>
   3 <body bgcolor=#ffffff>
   4 <H1>The Wonder Shaper</H1>
   5 <a href=http://ds9a.nl>bert hubert</a> &lt;ahu@ds9a.nl&gt;<br>
   6 &copy; Copyright 2002<br>
   7 Licensed under the GPL<br>
   8 Originally part of the <a href=http://lartc.org>
   9 Linux Advanced Routing &amp; Shaping HOWTO</a>
  10 <p>
  11 <small>
  12 Before, without wondershaper, while uploading:<br>
  13 round-trip min/avg/max = 2041.4/<font color=#ff0000>2332.1</font>/2427.6 ms<p>
  14 After, with wondershaper, during 220kbit/s upload:<br>
  15 round-trip min/avg/max = 15.7/<font color=#ff0000>51.8</font>/79.9 ms
  16 </small>
  17
  18
  19 <p>
  20 * <a href=wondershaper-1.1a.tar.gz>Download version 1.1a</a>, released 16th of
  21 April 2002.<br>
  22 * <a href=wondershaper-1.0.tar.gz>Download version 1.0</a>, released 5th of
  23 March 2002.
  24 <p>
  25 Works on Linux 2.4 &amp; higher.
  26 <p>
  27 <font color=#ff0000>If you get an error in the last two lines of the script,
  28 try this version of iproute instead:
  29 <a href=ftp://ftp.inr.ac.ru/ip-routing/iproute2-2.4.7-now-ss010824.tar.gz
  30 >
  31 ftp://ftp.inr.ac.ru/ip-routing/iproute2-2.4.7-now-ss010824.tar.gz</a>.
  32 (<a href=./iproute2-2.4.7-now-ss010824.tar.gz>local mirror</a>)
  33 </font>
  34
  35 <H2>Goals</H2>
  36
  37 I attempted to create the holy grail:
  38 <p>
  39         * Maintain low latency for interfactive traffic at all times
  40 <p>
  41 This means that downloading or uploading files should not disturb SSH or
  42 even telnet. These are the most important things, even 200ms latency is
  43 sluggish to work over.
  44 <p>
  45         * Allow 'surfing' at reasonable speeds while up or downloading
  46 <p>
  47 Even though http is 'bulk' traffic, other traffic should not drown it out
  48 too much.
  49 <p>
  50         * Make sure uploads don't harm downloads, and the other way around
  51 <p>
  52 This is a much observed phenomenon where upstream traffic simply destroys
  53 download speed. It turns out that all this is possible, at the cost of a
  54 tiny bit of bandwidth. The reason that uploads, downloads and ssh hurt
  55 eachother is the presence of large queues in many domestic access devices
  56 like cable or DSL modems.
  57
  58 </body></html>