A screencast of my Devel::NYTProf v3 talk at the Italian Perl Workshop (IPW09). It covers the new features in v3 and a new section outlining a multi-phase approach to optimizing your perl code.30 mins long plus 10 mins of questions. Best viewed fullscreen. The slides are available at http://www.slideshare.net/Tim.Bunce/perl-myths-200909