On 5 May 2017 at 14:36, Andres Freund <and...@anarazel.de> wrote: > I wonder how much doing the atomic ops approach alone can help, that > doesn't have the issue that the work might be unevenly distributed > between pages.
I wondered that too, since I though the barrier for making this change would be lower by doing it that way. I didn't manage to think of a way to get around the wrapping the position back to 0 when synch-scans are involved. i.e parallel_scan->phs_cblock++; if (parallel_scan->phs_cblock >= scan->rs_nblocks) parallel_scan->phs_cblock = 0; -- David Rowley 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
