On 2019/03/20 11:51, Imai, Yoshikazu wrote:
> 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.
Hmm, OK. Can you describe your test setup with more details?
Thanks,
Amit