Re: Reducing memory consumed by RestrictInfo list translations in partitionwise join planning

On 2025-Mar-28, David Rowley wrote:

> I experimented by applying your v4 along with 0001-0003 of Yuya's v35
> patchset from [2].  See the attached bz2 for my results run on an AMD
> Zen2 machine. The CREATE TABLE statement is in the attached script.

Eyeballing these results, unless I am misreading them, the patch brings
zero benefit.

With PWJ off, there's no plan time improvement and no memory consumption
improvement either; only with Watari-san's patch there's an improvement
in plan time (and with Watari's patch, I see negligible difference
between the case with 64 buckets and the other case, which I assume has
256 buckets).  But the "master" vs. "v4_patch" cases seem to be
essentially identical.

With PWJ on, the situation is the same.  master_pwj looks pretty much
the same as v4_pwj.

-- 
Álvaro Herrera        Breisgau, Deutschland  —  https://www.EnterpriseDB.com/