On Mon, Sep 18, 2006 at 06:10:13PM -0700, Luke Lonergan wrote: > Also be sure to set the random_page_cost parameter in > postgresql.conf to 100 or even higher when you use indexes, as the actual > seek rate for random access ranges between 50 and 300 for modern disk > hardware. If this parameter is left at the default of 4, indexes will often > be used inappropriately. Does a tool exist yet to time this for a particular configuration? Cheers, mark -- mark@xxxxxxxxx / markm@xxxxxx / markm@xxxxxxxxxx __________________________ . . _ ._ . . .__ . . ._. .__ . . . .__ | Neighbourhood Coder |\/| |_| |_| |/ |_ |\/| | |_ | |/ |_ | | | | | | \ | \ |__ . | | .|. |__ |__ | \ |__ | Ottawa, Ontario, Canada One ring to rule them all, one ring to find them, one ring to bring them all and in the darkness bind them... http://mark.mielke.cc/