@Jeff : Thanks for pointing this out. Turns out that was the case. @Tom: Thank you for the reference to random_page_cost parameters. It would be very useful for us. Would go through the rest of the documentation as well.
On Wed, Jul 31, 2013 at 3:55 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Sandeep Gupta <gupta.sand...@gmail.com> writes: > > details regarding buffer usage: > > [ 100% buffer hit rate ] > > Your database is evidently fully cached in memory. If that's the > operating mode you expect, you need to change the planner's cost > parameters, in particular reduce random_page_cost to equal seq_page_cost. > There is plenty of material about this on the PG wiki or in the > pgsql-performance archives. > > regards, tom lane >
