I'd like to propose a talk in the Perl devroom at FOSDEM.
Title: Tracing Perl with DTrace/SystemTap
Length: 30 mins
Perl gained support for DTrace in version 5.10.1. Combing the whole system
visibility of DTrace with Perl provides a powerful diagnostics and profiling
This talk will explain how to use DTrace with Perl (with some coverage of
SystemTap), provide an overview of situations where it is useful and also
places where other tools are more appropriate.
David Leadbeater is just another coffee swilling perl hacker, you'll find him
as dgl on CPAN and GitHub and at http://dgl.cx