By rnl on Apr 03, 2008
The issue with PostgreSQL's DTrace probes not working with Mac OS X Leopard as reported in the mail list has been fixed and checked into the 8.4 development tree. The problem had to do with the fact that Leopard's DTrace implementation not supporting the -G flag.
With the new implementation, the steps for adding new probes are slightly different than before, but the provider and probe names remain the same. For details on how to use and add new probes, refer to the online doc.
Many thanks to Peter Eisentraut, Tom Lane, and Alvaro Herrera for their valuable feedback and assistance!