Heikki, This sounds a lot like my idea for 9.3, which didn't go anywhere. You've worked out the issues I couldn't, I think.
> Another method is > to store the 32-bit xid values in tuple headers as offsets from the > per-page 64-bit value, but then you'd always need to have the 64-bit > value at hand when interpreting the XIDs, even if they're all recent. Yeah, -1 on the latter, not least because it would require a 100% rewrite of the tables in order to upgrade. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
