On Sun, 23 Oct 2005, Kishore B wrote: > We need to insert into the bigger table almost for every second , through > out the life time. In addition, we receive at least 200,000 records a day at > a fixed time. > > We are facing a* critical situation because of the performance of the ** > database**.* Even a basic query like select count(*) from bigger_table is > taking about 4 minutes to return.
Count(*) like that always scans the full table, but 4 minutes still sound like a lot. How often do you vacuum? Could it be that the disk is full of garbage due to not enough vacuum? A query like this can help find bloat: SELECT oid::regclass, reltuples, relpages FROM pg_class ORDER BY 3 DESC; I assume to do updates and deletes as well, and not just inserts? -- /Dennis Björklund ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
