> > I think I need full, because there are updates on the table.  As I
> > understand it, an update in pg is an insert/delete, so it needs
> > to be garbage collected.
> Yes and no.  You only need a plain VACUUM that is run often enough to
> recover space as fast as you need to grab it.  For heavily updated tables
> run it often - I run it every 5 minutes on some tables.  A VACUUM FULL is
> only needed if you haven't been running VACUUM often enough in the first
> place.

Also, if you find that you need to run VACUUM FULL often, then you need to 
raise your max_fsm_pages.

-Josh Berkus
 Aglio Database Solutions
 San Francisco

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