Обсуждение: postgresql9.5 partition table
I defined a table using 1000 partition tables.
When I deleted or updated this table. It used a lot of memory and postmaster process is killed by OS. When I defined the same table using 100 partition tables. It can normally be updated and deleted. what is reason of this?
When I deleted or updated this table. It used a lot of memory and postmaster process is killed by OS. When I defined the same table using 100 partition tables. It can normally be updated and deleted. what is reason of this?
mark wrote: > I defined a table using 1000 partition tables. > When I deleted or updated this table. It used a lot of memory and > postmaster process is killed by OS. When I defined the same table > using 100 partition tables. It can normally be updated and deleted. > what is reason of this? Postgres 9.5 is not prepared to deal with thousands of partitions. You can try the improved partitioning with the new syntax introduced in Postgres 10 -- you may have better luck there. Please test it. If it still doesn't work, let us know in detail what you tested and how it failed. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Hi Herrera
Thanks for your reply.
I will try it in postgresql10.
Regards,
Mark
发自网易邮箱手机版
Thanks for your reply.
I will try it in postgresql10.
Regards,
Mark
发自网易邮箱手机版
mark wrote:在2017年12月29日 21:46，Alvaro Herrera 写道：
> I defined a table using 1000 partition tables.
> When I deleted or updated this table. It used a lot of memory and
> postmaster process is killed by OS. When I defined the same table
> using 100 partition tables. It can normally be updated and deleted.
> what is reason of this?
Postgres 9.5 is not prepared to deal with thousands of partitions.
You can try the improved partitioning with the new syntax introduced in
Postgres 10 -- you may have better luck there. Please test it.
If it still doesn't work, let us know in detail what you tested and how
it failed.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services