CLUSTER also does *nothing at all* to a table unless you have chosen an index to CLUSTER on. Its not as simple as switching from VACUUM or VACUUM FULL to CLUSTER. Does CLUSTER also REINDEX? I seem to recall reducing the size of my indexes by REINDEXing after a CLUSTER, but it was a while ago and I could have been mistaken. -----Original Message----- From: pgsql-performance-owner@xxxxxxxxxxxxxx [mailto:pgsql-performance-owner@xxxxxxxxxxxxxx] On Behalf Of Kevin Grittner Sent: Monday, January 04, 2010 1:04 PM To: Madison Kelly; Gary Doades Cc: pgsql-performance@xxxxxxxxxxxxxx Subject: Re: DB is slow until DB is reloaded Madison Kelly <linux@xxxxxxxxxxx> wrote: > I've added CLUSTER -> ANALYZE -> VACUUM to my nightly > routine and dropped the VACUUM FULL call. The CLUSTER is probably not going to make much difference once you've eliminated bloat, unless your queries do a lot of searches in the sequence of the index used. Be sure to run VACUUM ANALYZE as one statement, not two separate steps. -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
