Robert Haas <robertmh...@gmail.com> writes: > On Tue, Jan 18, 2011 at 12:23 PM, Jim Nasby <j...@nasby.net> wrote: >> On Jan 17, 2011, at 8:11 PM, Robert Haas wrote: > On Mon, Jan 17, 2011 at 7:56 PM, Jim Nasby <j...@nasby.net> wrote: >>> - Forks are very possibly a more efficient way to deal with TOAST than >>> having separate tables. There's a fair amount of overhead we pay for the >>> current setup. > > That seems like an interesting idea, but I actually don't see why it > would be any more efficient, and it seems like you'd end up > reinventing things like vacuum and free space map management. >> >> The FSM would take some effort, but I don't think vacuum would be that hard >> to deal with; you'd just have to free up the space in any referenced toast >> forks at the same time that you vacuumed the heap.
> How's that different from what vacuum does on a TOAST table now? Even more to the point: Jim hasn't provided one single reason to suppose that this would be better-performing than the existing approach. It looks to me like a large amount of work, and loss of on-disk compatibility, for nothing at all except the sake of change. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers