This Geek Speak blog post has a link that has been broken since at least 8/24 of 2012. The information looks useful, so how about we get the link working so that I can use the information in the blog post.
The fact that there are three comments pointing out the link is broken looks like no one reads the comments. Which I really don't understand.
Orion performance best practices - Part 1: monitoring the 10.2 Polling Engine