| From: | David Rowley <dgrowleyml(at)gmail(dot)com> |
|---|---|
| To: | Christoph Berg <myon(at)debian(dot)org> |
| Cc: | Tatsuo Ishii <ishii(at)postgresql(dot)org>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: pgsql: Add memory/disk usage for Window aggregate nodes in EXPLAIN. |
| Date: | 2025-03-31 22:09:11 |
| Message-ID: | CAApHDvoOHfFYXUryAymxiZjvyvhEt0ueeBOJRUOJWn1W7e3eyA@mail.gmail.com |
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On Tue, 1 Apr 2025 at 09:40, Christoph Berg <myon(at)debian(dot)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
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