Simon Riggs wrote: > On Tue, Jun 14, 2011 at 7:28 PM, Bruce Momjian <br...@momjian.us> wrote: > > Simon Riggs wrote: > >> Currently, the planner and executor are mostly independent of each > >> other: the planner doesn't really know when the plan will be executed, > >> and the executor doesn't know how recently the plan was made. > >> > >> We can work out the various paths through the traffic cop to see when > >> a plan will be a "one-shot" - planned and then executed immediately, > >> then discarded. > > > > I was also hoping someday allow plans that are to be immediately > > executed to probe the buffer cache to determine how expensive index > > scans would be. > > Yes, it opens up many optimizations, both for cache sensitivity and > dynamic data access. > > But those are later ideas based on the existence of this first step.
Agreed. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
