On Thu, Oct 19, 2017 at 1:16 AM, Robert Haas <robertmh...@gmail.com> wrote: > On Tue, Oct 17, 2017 at 5:39 PM, Andres Freund <and...@anarazel.de> wrote: > >> b) Use shm_mq_sendv in tqueue.c by batching up insertions into the >> queue whenever it's not empty when a tuple is ready. > > Batching them with what? I hate to postpone sending tuples we've got; > that sounds nice in the case where we're sending tons of tuples at > high speed, but there might be other cases where it makes the leader > wait. >
I think Rafia's latest patch on the thread [1] has done something similar where the tuples are sent till there is a space in shared memory queue and then turn to batching the tuples using local queues. [1] - https://www.postgresql.org/message-id/CAOGQiiNiMhq5Pg3LiYxjfi2B9eAQ_q5YjS%3DfHiBJmbSOF74aBQ%40mail.gmail.com -- With Regards, Amit Kapila. EnterpriseDB: http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
