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From: David Geier <[email protected]>
To: Kirill Reshke <[email protected]>
To: Heikki Linnakangas <[email protected]>
Cc: pgsql-hackers <[email protected]>
Subject: Re: Reduce build times of pg_trgm GIN indexes
Date: Fri, 9 Jan 2026 13:10:38 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <CALdSSPh9nwXeOiEuuoXuWbsP1nQ3GMkMMZQcyw0CyyZnvZZgzg@mail.gmail.com>
References: <[email protected]>
	<[email protected]>
	<CALdSSPh9nwXeOiEuuoXuWbsP1nQ3GMkMMZQcyw0CyyZnvZZgzg@mail.gmail.com>

Hi!

> Hi!
> patches 0003, 0004 & 0008 applies with whitespace errors.
> 
I've fixed the white space errors. See v2 of the patch set in [1].

> I did run benchmarks of my VM using your data. v1-0001 solely improves
> runtime by 4-5%. v2-0002 does not show runtime improvement for me.
> With parallel GIN build, performance gains are 2-3 % for 2 workers and
> not noticeable after that.
> 
> I will try to run some more benchmarks on this.

Thanks. I've also included the delta for each patch in [1]. I would be
curious what you measure, especially for patch 0004, where I curiously
measured a regression.

[1]
https://www.postgresql.org/message-id/e5dd01c6-c469-405d-aea2-feca0b2dc34d%40gmail.com

--
David Geier

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