On Mon, 2010-03-22 at 16:48 -0400, Bruce Momjian wrote: > I don't think we want to move to 64-bit xids becasue we would still need > to do vacuum freeze to trim the clog. In fact we do vacuum freeze much > more frequently than required for 32-bit xids for this very reason.
Good point. I think there are a lot of issues like this, which would make storing the visibility information separate from the heap a huge undertaking. Still worth thinking about, though. Regards, Jeff Davis -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers