On v8 right? This one is probably the best broad overview:<p><a href="http:&#x2F;&#x2F;www.html5rocks.com&#x2F;en&#x2F;tutorials&#x2F;speed&#x2F;v8&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.html5rocks.com&#x2F;en&#x2F;tutorials&#x2F;speed&#x2F;v8&#x2F;</a><p>To get into the gory details google Vyacheslav Egorov - he&#x27;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&#x27;ve been compiled into v8&#x27;s internal representation.