On Monday, May 22, 2017, Clemens Eisserer <
linuxhippy@gmail.com> wrote:
Hi,
I have a letancy-sensitive legacy application, where the time consumed
by query planning was always causing some headaches.
Currently it is running on postgresql-8.4 - will postgresql-10 support
generating plans using multiple CPU cores to reduce the time required
to generate a single plan?
My understanding, from both list monitoring and the release notes, is that query parallelization happens only during execution, not planning. A single process is still responsible for evaluating all (possibly partial) plans and picking the best one - flagging those plan steps that can leverage parallelism for possible execution.
David J.