Tambet,
> Hmm, thanks for a tip. BTW, is output of
>
> select count(1), sum(relpages) from pg_class where relkind in
> ('r','i','t')
Well, if you do that for all databases in the cluster, it's the number you
start with. However, setting FSM_pages to that would be assuming that you
excpected 100% of the rows to be replaced by UPDATES or DELETEs before you
ran VACUUM. I generally run VACUUM a little sooner than that.
See the end portion of:
http://www.powerpostgresql.com/PerfList
--
Josh Berkus
Aglio Database Solutions
San Francisco
