How odd, I set the following: seq_page_cost = 1.0 random_page_cost = 2.0 And now the query runs in milliseconds as opposed to 14 seconds. Could this really be the change? I am running ANALYZE now - how often is it recommended to do this? Thank you Ogden On Sep 21, 2010, at 1:51 PM, Jesper Krogh wrote: > On 2010-09-21 20:21, Ogden wrote: >> I assume you mean random_page_cost? It is currently set to 4.0 - is it better to increase or decrease this value? >> > > Should be lowered to a bit over seq_page_cost.. and more importantly.. you should > make sure that you have updated your statistics .. run "ANALYZE"; > > -- > Jesper > > -- > 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
