If you have DTrace on your platform, there are some interesting probes available which can be handy for tracking down what's going on. Not quite one of the requ

If you have DTrace on your platform, there are some interesting probes available which can be handy for tracking down what's going on. Not quite one of the requested features, but it can be used in system wide explorations of performance issues as well as just looking inside the database. http://www.postgresql.org/docs/current/static/dynamic-trace.html http://www.postgresql.org/docs/current/static/dynamic-trace....