Simon Riggs <[EMAIL PROTECTED]> writes: > We discussed an optimization of VACUUM here > http://archives.postgresql.org/pgsql-hackers/2005-09/msg00046.php > that would allow VACUUM to complete faster by avoiding scanning the > indexes when no rows were removed from the heap by the VACUUM.
After looking at this, I think it is salvageable, but the patch as written complicates the vacuum-to-index-AM API more than necessary; there's no reason why the AM has to expose the fact that it skipped doing anything. I'll clean it up and reapply. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend