On v8 right? This one is probably the best broad overview: http://www.html5rocks.com/en/tutorials/speed/v8/ http://www.html5rocks.com/en/tutorials/speed/v8/ T

On v8 right? This one is probably the best broad overview: http://www.html5rocks.com/en/tutorials/speed/v8/ http://www.html5rocks.com/en/tutorials/speed/v8/ To get into the gory details google Vyacheslav Egorov - he's a v8 engineer with a number of talks on YouTube, presentation slides, and blog posts on v8 internals. He also maintains a tool called IRhydra, that lets you examine functions after they've been compiled into v8's internal representation.