I’ve just created a subversion repository with perl 5.8.8, and the accumulated DTrace patches – including the using is-enabled to reduce the performance impact of the Probes when disabled. Byran and I, (and anyone else that would like to help) will be working slowly towards making Perl a first class DTrace citizen over the coming months. Next stop – Perl Guts Illustrated
Of course, we’ll also port it all to Perl 5.10 – the 20th anniversary release 🙂