Mac OS X v10.5 ("Leopard") contains vast changes under the hood. One of the greatest additions is Sun's dtrace. The November issue has a fantastic introduction to dtrace, and we were able to put it online this morning! Go check it out at:
http://www.mactech.com/articles/mactech/Vol.23/23.11/ExploringLeopardwithDTrace/index.html
It was authored by Greg Miller, who works with Amit Singh at Google. It's absolutely one of the best introductions to dtrace that I've seen, so, Leopard users, don't delay! Go check it out!
