On Wed, 2005-09-28 at 09:07 +0200, hubert depesz lubaczewski wrote: > database has quite huge load of updates, but i thought that vacum will > guard me from database bloat, but from what i observed it means that > vacuuming of b-tree indices is somewhat faulty.
No, thats perfectly normal. Indices are packed tighter when they are first created and they spread out a bit as you update the database. Blocks start at 90% full and end up at 50% full for non-monotonic indexes (e.g. SERIAL) or 67% for monotonic. It's a long debated design feature on any DBMS that uses b-trees. REINDEX or dump/restore should be identical. Best Regards, Simon Riggs ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
