This event was recorded live at the jam-packed #perfmatters event hosted by the San Francisco HTML5 User Group on September 19th, 2013. Note: the video referenced at 10m is here: https://www.youtube.com/watch?v=mSK70FwUz2A&feature=c4-overview&list=UUf7pOCNs6qmbSsBz2xQBI4g
![Performance Tooling by Paul Irish (#perfmatters at SFHTML5)](https://cdn-ak-scissors.b.st-hatena.com/image/square/1e51ade561f9971d8890c7534bb2634735119898/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2FHAqjyCH_LOE%2Fhqdefault.jpg)