More on how DTrace works

Just went to BigAdmin: DTrace once again, and bumped into this useful link - and decided to highlight it yet again.

This link leads to a pdf-file with the technical paper of the three guys who created DTrace - Bryan M. Cantrill, Michael W. Shapiro and Adam H. Leventhal, for the last USENIX conference. The title is: Dynamic Instrumentation of Production Systems.
Apart from listing all the advantages of DTrace, the paper also gives a thorough conceptual description of DTrace dynamic tracing mechanisms DTrace - I highly recommend you read it.