From: David Rowley <dgrowleyml@gmail.com>
Subject: Re: pgsql: Add memory/disk usage for Window aggregate nodes in EXPLAIN.
Date: Tue, 1 Apr 2025 11:09:11 +1300
Message-ID: <CAApHDvoOHfFYXUryAymxiZjvyvhEt0ueeBOJRUOJWn1W7e3eyA@mail.gmail.com>
> On Tue, 1 Apr 2025 at 09:40, Christoph Berg <myon@debian.org> wrote:
>> =# explain (analyze,buffers off,costs off) select sum(n) over() from generate_series(1,2048) a(n);
>> QUERY PLAN
>> ──────────────────────────────────────────────────────────────────────────────────────────
>> WindowAgg (actual time=2.073..2.686 rows=2048.00 loops=1)
>> Window: w1 AS ()
>> Storage: Disk Maximum Storage: 65kB
>
> Thank you for testing that. I've just pushed a patch to bump it up to 2500.
>
> I suspect the buildfarm didn't catch this due to the tuplestore
> consuming enough memory in MEMORY_CONTEXT_CHECKING builds.
David,
Christoph,
Thank you for fixing this!
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp
