David Rowley wrote:
> To put the new patch to the test, I tried pgbench -S -M prepared -s
> 100 with and without having modified pgbench_accounts to separate into
> 10 RANGE partitions of equal size.
>
> A non-partitioned table was getting 12503 TPS.
> With partitioned tables, the old version of this patch was getting: 5470 TPS.
> With partitioned tables, the attached version gets 11247 TPS.
> For perspective, today's master with a partitioned table gets 4719 TPS.
>
> So you can see it's a pretty good performance boost by skipping
> initialisation of the 9 non-matching subplans. It's not hard to
> imagine the gains getting more significant with a larger number of
> partitions.
These are excellent news!
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
