| From: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
| Cc: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Keisuke Kuroda <keisuke(dot)kuroda(dot)3862(at)gmail(dot)com>, tatsuro(dot)yamada(dot)tf(at)nttcom(dot)co(dot)jp, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Amit Langote <amitlangote09(at)gmail(dot)com>, tatsuhito(dot)kasahara(dot)rd(at)hco(dot)ntt(dot)co(dot)jp |
| Subject: | Re: Huge memory consumption on partitioned table with FKs |
| Date: | 2020-12-02 13:46:04 |
| Message-ID: | CANP8+jJam6AVLg7tojD0cBDPP3PANXokhpUopM2+wqbDWpjeyQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, 1 Dec 2020 at 00:03, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> wrote:
> cache entry is reused in the common case where they are identical.
Does a similar situation exist for partition statistics accessed
during planning? Or planning itself?
It would be useful to avoid repeated access to similar statistics and
repeated planning of sub-plans for similar partitions.
--
Simon Riggs http://www.EnterpriseDB.com/
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