On Mon, Jun 20, 2005 at 09:55:12PM +0100, Simon Riggs wrote: > I put those changes in mainly for COPY. If you don't make any request at > all to FSM then a relation never gets to the MRU relation FSM list. I > agree that it is not strictly necessary, but leaving it off would be a > change in behaviour, since COPY did previously cause the relation to get > to the MRU. That could be a problem, since a relation might not then be > allocated any FSM pages following a vacuum.
Is that a problem? If the pages don't fit in FSM, then maybe the system is misconfigured anyway. The person running the DW should just increase the FSM settings, which is hardly a costly thing because it uses so little memory. -- Alvaro Herrera (<alvherre[a]surnet.cl>) "No renuncies a nada. No te aferres a nada." ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match