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] - 

With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

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