So Apple put DTrace into OSX Leopard. It's pretty cool. Have been playing with it for a large chunk of the day. Of course - useless without enabling it some of the languages we all use (PHP, Python and Ruby). So - I spent a while hacking it about with the source code.... Now I have things like: Would anybody be interested in the patches for the dtrace PEAR module for PHP and the MacPorts versions of Python and Ruby? Not sure if they'll accept the patches upstream - so I want to gauge whether people want that or not.