Slides of my talk on Devel::NYTProf and optimizing perl code at YAPC::EU in August 2010. It covers the new features in NYTProf v4 and outlines a multi-phase approach to optimizing your perl code. Best viewed fullscreen.
A screencast of a slightly earlier version of this talk, that includes a demo, is available at http://blip.tv/file/3913278
Clipping is a handy way to collect important slides you want to go back to later.