On 03.06.2011 22:16, Bruce Momjian wrote:
I realize we just read the pages from the kernel to maintain sequential I/O, but do we actually read the contents of the page if we know it doesn't need vacuuming?
Yes.
If so, do we need to?
Not necessarily, but it allows us to freeze old tuples, and doesn't cost much anyway.
-- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
