"Pavan Deolasee" <[EMAIL PROTECTED]> writes: > That's weird. With that fillfactor, you should have a very high > percentage of HOT update ratio. It could be a very special case that > we might be looking at.
He's testing >> update table1 set delta1 = 100 where code/1000000 =999; so all the rows being updated fall into a contiguous range of "code" values. If the table was loaded in such a way that those rows were also physically contiguous, then the updates would be localized and would very soon run out of freespace on those pages. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance