On Tue, Nov 3, 2009 at 7:13 AM, Kevin Grittner <Kevin.Grittner@xxxxxxxxxxxx> wrote: > Grant Masan <grant.massan@xxxxxxxxx> wrote: > > >> cpu_tuple_cost = 0.0030 >> cpu_index_tuple_cost = 0.0010 >> cpu_operator_cost = 0.0005 > > Why did you make these adjustments? I usually have to change the > ratio between page and cpu costs toward the other direction. Is that because the database is mostly cached in memory? If I take the documented descriptions of the costs parameters at face value, I find that cpu_tuple_cost should be even lower yet. Cheer, Jeff -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
