Peter Schuller wrote:
> But in general, it would be very interesting to see, at any given
> moment, what PostgreSQL backends are actually blocking on from the
> perspective of PostgreSQL.
The recent work on DTrace support for PostgreSQL will probably give you
the easiest path to useful results. You'll probably need an OpenSolaris
or (I think) FreeBSD host, though, rather than a Linux host.
--
Craig Ringer