Amit-san,
On Wed, Mar 20, 2019 at 2:34 AM, Amit Langote wrote:
> On 2019/03/20 11:21, Imai, Yoshikazu wrote:
> > (4)
> > We expect the performance does not depend on the number of partitions
> after applying all patches, if possible.
> >
> > num of part TPS
> > ----------- -----
> > 1024 7,257 (7274, 7246, 7252)
> > 2048 6,718 (6627, 6780, 6747)
> > 4096 6,472 (6434, 6565, 6416) (quoted from above (3)'s results)
> > 8192 6,008 (6018, 5999, 6007)
> >
> > It seems the performance still depend on the number of partitions. At
> the moment, I don't have any idea what cause this problem but can we improve
> this more?
>
> I've noticed [1] this kind of degradation when the server is built with
> Asserts enabled. Did you?
> ...
> [1]
> https://www.postgresql.org/message-id/a49372b6-c044-4ac8-84ea-90ad18
> b1770d%40lab.ntt.co.jp
No. I did test again from configuring without --enable-cassert but problem I mentioned still happens.
--
Yoshikazu Imai