Alvaro Herrera wrote:
> Heikki Linnakangas escribió:
>
>> Hmm. I wonder if we could prune/defragment in bgwriter?
>
> That would be best, if at all possible. You can prune without accessing
> anything outside the page itself, right?
Yes, though you do need to have an oldest xmin to determine which tuples
are dead, and the removed tuples need to be WAL-logged.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com