As Bryan wrote, Apple has ported DTrace to Mac OS X. The Apple kernel team invited us to the WWDC today for the (albeit muted) announcement of their DTrace support, and then for a demo and dinner. It was surprisingly fun to play with DTrace on another OS, and it was a true pleasure to talk to the Apple guys who worked on the port. And it's my pleasure to introduce those engineers to the DTrace community at large:
James McIlree, Tom Duffy, Steve Peters, Terry Lambert (DTrace on Mac OS X inset)
And here's team DTrace with our new friends at Apple:
Congratulations to the Apple team and to Mac OS X users. I'm installing the DTrace-enabled Mac OS X on my laptop right now -- something I've been wanting for a long time...