On Wed, 31 Aug 2005, Tom Lane wrote: > BTW ... the original Berkeley papers on Postgres make frequent reference > to a "vacuum daemon", which seems to be essentially what we're trying to > build with autovacuum. Does anyone know if the Berkeley implementation > ever actually had auto vacuuming, or was that all handwaving? If it did > exist, why was it removed?
Well, I was just poking around the executor and noticed this in ExecDelete(): /* * Note: Normally one would think that we have to delete index tuples * associated with the heap tuple now.. * * ... but in POSTGRES, we have no need to do this because the vacuum * daemon automatically opens an index scan and deletes index tuples * when it finds deleted heap tuples. -cim 9/27/89 */ So, it seems they must have actually written the vacuum daemon. Gavin ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org