On Fri, Nov 4, 2011 at 2:17 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Now, heap_page_prune is in a slightly different place, because it > doesn't actually know whether the current backend is going to make an > insertion or update in the page. If it did know that was going to > happen, then the analogy would be exact.
OK. > In any case, the comment in heap_page_prune is ignoring the probability > that VACUUM will eventually visit the page and then update the FSM. > That ought to be factored into any discussion of what to do here. True. Unfortunately, I have no intuition on what the right thing to do is, here. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
