Elliott C. Back: Internet & Technology

Azureus Torrent Download Speed Tips

Posted in azureus,bit torrent,bittorrent,P2P by Elliott Back on May 15th, 2006.

If your torrents are downloading too slowly and you want to improve your download speed in Azureus, you’ve come to the right place. Azureus is a bittorrent client, namely, a program you can use to download files at high rates across the internet from a variety of peers. It’s a p2p (peer to peer) filesharing program, and may get you in trouble with legal authorities (RIAA, MPAA) if you use it illegally. However, it has plenty of non-infringing uses, as well.

Today I downloaded a torrent at 1.12 MB/s:


On a regular 10 Mb/s LAN that’s the best you’re going to be able to do, but only if your bit torrent program is configured properly. There are a few things you can do to improve performance in Azureus, and here they are:

1) Uncap the Windows XP SP2 Connections Limit

Service pack 2 limited the TCP/IP stack to 10 half-open connections–there rest are queued–to reduce virus spread rate. Unfortunately, this cripples a p2p program. Open those connections with this patch: EvID4226Patch223d-en.zip. Install at your own risk, but it works great for me with the limit increased from 10 to 100 or 200. You could go as high as 500 if you wanted, but that might be overkill.

2) Setup Port Forwarding

You need a path from your p2p program to the peers, and if you’re using a home firewall, make sure you forward the port that Azureus uses to your computer. This tutorial will help you–you can find the find the Azureus port in the first Options screen:


3) Setup Advanced Network Settings

Go to Options->Connection->Advanced Network Settings. You’ll see a screen like this:


You want a lot of simultaneous connections, so set the “max simultaneous outbound connection attempts” field to something just under what you set the Windows XP connection limit to in the hack in #1. I had 100 XP connections, so I set 64 in Azureus.

4) Upload Transfer

Go to Options->Transfer. You’ll see this screen:


You should set the “global max upload speed” 100-300KB/s, so that you can spend most of your connection bandwidth on downloading, and not uploading. However, the bit torrent protocol requires you to upload, so you should not set this less than 100 KB/s unless you’re on a very slow connection.

Additional Resources

  1. Top Azureus Plugins
  2. Azureus Caching Tips
  3. Azureus Speed Wiki Page
  4. Encrypt Azureus Traffic

Visual Glitches in Websites

Posted in Computers & Technology,Education,Graphics by Elliott Back on October 19th, 2005.

How much attention do pay to websites that you visit? Sometimes, if you look carefully on a high-resolution, high-contrast monitor or LCD you can pick out visual glitches, little artifacts that don’t belong. Mistakes the designers should have caught, but didn’t, or corruption and noise finding its way into the digital canvas. This post is a chronicle of such mistakes, from the high to the low of the online world.

Youtube Uploading Tool:


Youtube thinks my upload progress is “undefined” which is probably a javascript error somewhere.

IE7 Beta 2 Quick Tour:

IE7b2 Quick Tour Glitch

The text of the IE 7 Beta 2 preview quick tour is littered with ugly black fuzzy outlines around white text which is increasingly noticeable in this screenshot as you gaze from left to right across the screen.

Digg digg a story page:

Digg.com looks gross!

I have no idea what happened here–it seems like the digg menu is overlapping the page content. Since it’s in FF, I assume this is credible.

Ping-o-Matic pings page:

For some reason or another, something is NULL, but we don’t get more than that:


Grokster.com main page:

The RIAA/MPAA took over Grokster, and left a big gap in the graphics:

Grokster looks ugly!

They’ve also replaced any content with the following threatening notice:

The United States Supreme Court unanimously confirmed that using this service to trade copyrighted material is illegal. Copying copyrighted motion picture and music files using unauthorized peer-to-peer services is illegal and is prosecuted by copyright owners.

There are legal services for downloading music and movies. This service is not one of them.

YOUR IP ADDRESS IS AND HAS BEEN LOGGED. Don’t think you can’t get caught. You are not anonymous.

WordPress.com main page footer:

There’s a weird : ) face on the bottom of all the official site pages:

Wordpress.com Visual Glitch

Amazon.com Product Detail Pages:

There’s an ugly website bug that plagues all of the Amazon.com detail pages:

Amazon dot com can't do webpages

There’s a .083 inch section of the bottom of their header jutting out too far:

Now you see it

Firefox & the Mozilla Project’s online store:

Mozilla Store Glitch

If you look more closely, you will immediately notice that the edges of the image don’t fade to white, but abruptly cut off:

Mozilla Store Glitch

Morgan Stanley‘s North-America recruiting and careers page:

Morgan Stanely NA Career Page

You’ll notice the little blue rectangle in the background of the header is a little darker than its surroundings. Contrast enhancement brings this visual artifact out of the mix:

Morgan Stanely NA Career Page

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