Re: Vacuuming and already vacuumed table?

On Thu, 2003-08-28 at 16:53, Stephen Frost wrote:
> Would it make sense for vacuum to keep a list of 'last vacuumed' or
> similar so that it doesn't vacuum a table which hasn't changed since
> the last time it was vacuum'd? Seems to me that would be a pretty
> simple optimization which would help out alot on systems which have
> both a large set of tables which are relatively static and data which
> changes a great deal. This is especially true for vacuum full which
> also locks the table.

7.4Beta has a contrib module called pg_autovacuum. It attempts to do
exactly what you are talking about. It only vacuums a table that has
had sufficient activity since the last vacuum. It runs as a standalone
daemon. Also, it can be used against 7.3 if that is what you are
running.