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In-Reply-To: <DD8YF2IZ2M1C.1C0WAMOSIW59K@gmail.com>
From: Richard Guo <guofenglinux@gmail.com>
Date: Mon, 6 Oct 2025 09:56:25 +0900
Message-ID: 
 <CAMbWs48H9gj4gJ356OzRMBShMbpP0tJX9GvEJaRLzOf0qscS_A@mail.gmail.com>
Subject: Re: Eager aggregation, take 3
To: Matheus Alcantara <matheusssilv97@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>,
	Tender Wang <tndrwang@gmail.com>, Paul George <p.a.george19@gmail.com>,
	Andy Fan <zhihuifan1213@163.com>,
	PostgreSQL-development <pgsql-hackers@postgresql.org>,
 pgsql-hackers@lists.postgresql.org
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Precedence: bulk

On Sat, Oct 4, 2025 at 5:03=E2=80=AFAM Matheus Alcantara
<matheusssilv97@gmail.com> wrote:
> I've disabled the cassert and executed the ANALYZE again before
> benchmarking and now I have similar results with a improvement on eager
> aggregate version:
>
> -- master
> Planning Time: 2.734 ms
> Execution Time: 5238.128 ms
>
> -- patched
> Planning Time: 2.578 ms
> Execution Time: 4732.584 ms

Great!

> The performance results look good to me. I don't have to much comments
> about the code although I'm still learning about the planner internals
> this patch seems in good shape to me.

Thanks for running the benchmark and reviewing the patch.

> I'm just attaching a new csv with the last results after running with
> cassert disabled and after executing ANALYZE. It looks good to me.

Yeah, the results look good this time.  There are no performance
regressions; on the contrary, several queries actually show very
really nice improvements.

- Richard