| From: | Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec> |
|---|---|
| To: | Kohei KaiGai <kaigai(at)heterodb(dot)com> |
| Cc: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Richard Guo <riguo(at)pivotal(dot)io>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: How to retain lesser paths at add_path()? |
| Date: | 2021-10-05 17:24:47 |
| Message-ID: | 20211005172447.GC28628@ahch-to |
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| Lists: | pgsql-hackers |
On Sat, Mar 06, 2021 at 06:50:13PM +0900, Kohei KaiGai wrote:
>
> On the other hand, I'm uncertain whether the pfree(new_path) at the tail
> of add_path makes sense on the modern hardware, because they allow to
> recycle just small amount of memory, then entire memory consumption
> by the optimizer shall be released by MemoryContext mechanism.
> If add_path does not release path-node, the above portion is much simpler.
>
Hi Kaigai-san,
Do you have an updated patch? Please feel free to resubmit to next CF.
Current CF entry has been marked as RwF.
--
Jaime Casanova
Director de Servicios Profesionales
SystemGuards - Consultores de PostgreSQL
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