On Fri, Aug 12, 2011 at 1:26 PM, Robert Haas <robertmh...@gmail.com> wrote:
> But it will be > a loser to apply the optimization to data sets that would otherwise > have fit in shared_buffers. Spoiling the cache is a bad plan, even if it makes the current query faster. I think we should make the optimisation stronger still and use FADV_DONT_NEED on blocks that fall from the ring buffer. Spoiling the OS cache is a problem as well. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
