Sean Christmann has a nice post on the AS3 AVM 2 ‘Elastic Racetrack’ cycles or virtual machine tick that runs an ES4 based javascript version of actionscript which we all know and love. The post has some info on how the AVM2 cycles run and can provide benefits to understanding frame rates and how execution is divided between script and render as well as player code from user code.

• Check out that and more at Craftymind like some other good stuff like garbage collection in AIR with actionscript 3 (as3) and serializing classes to files in AIR with AS3
• Original ‘Elastic Racetrack’ Post by Ted on Flex in 2005