Jim C. Nasby wrote:
>
> I think it's a good idea, but you should take a look at the recently
> added functionality that allows you to investigate the contests of the
> FSM via a user function (this is either in 8.1 or in HEAD; I can't
> remember which).
AFAICS it is still in the patch queue for 8.2.
It's called 'pg_freespacemap' and is available for 8.1/8.0 from the
Pgfoundry 'backports' project:
http://pgfoundry.org/projects/backports
Cheers
Mark