On Mon, Mar 24, 2008 at 7:05 AM, petchimuthu lingam <spmlingam@xxxxxxxxx> wrote: > i am using postgresql 8.1.8, > > Following configurations: > shared_buffers = 5000 > work_mem = 65536 > maintenance_work_mem = 65536 > effective_cache_size = 16000 > random_page_cost = 0.1 That number, 0.1 is not logical. anything below 1.0 is generally a bad idea, and means that you've got some other setting wrong. > The cpu is waiting percentage goes upto 50%, and query result comes later, > > i am using normal select query ( select * from table_name ). > > table has more then 6 million records. You need faster disks if you want sequential scans to go faster. Look into a decent RAID controller (Areca, Escalade (forgot what they're called now) or LSI) with battery backed cache. Run RAID-10 on it with as many drives as you can afford to throw at the problem. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
