On Sat, Dec 6, 2008 at 8:38 AM, Merlin Moncure <mmoncure@xxxxxxxxx> wrote: > So what do we gather from this? Well, the feature works as > advertised. I think that as long as your updates are not uniformly > distributed across pages, vismap is a huge performance win for many > workloads. I think the benefit will increase as the feature is > tweaked in future versions. vacuum times are one of the things that > make dealing with large tables difficult, and force us to use > partitioning (which is, frankly, a hack). > > Why are new pages initialized dirty? Do inserts on pages set the dirty bit? dumb question...there is no guarantee the transaction will be committed. merlin -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
