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Message-ID: <b6443638-9947-474b-ac5a-967e89142387@aklaver.com>
Date: Tue, 20 Jan 2026 08:34:17 -0800
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Subject: Re: pg_trgm upgrade to 1.6 led to load average increase
To: Nicolas Seinlet <nicolas@seinlet.com>,
 "pgsql-general@lists.postgresql.org" <pgsql-general@lists.postgresql.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 1/20/26 00:50, Nicolas Seinlet wrote:
> Hello,
> 
> we've upgraded the pg_trgm extension from 1.0 to 1.6 on our production 
> database, while sticking our postgresql cluster version to 16. This led 
> to an increase in the load average of the server (twice the load average 
> on our use case). After investigation, we found our issue was linked to :
> https://github.com/postgres/postgres/ 
> commit/935f6666502250abde8615bc7805a6e5aa05a066 <https://github.com/ 
> postgres/postgres/commit/935f6666502250abde8615bc7805a6e5aa05a066>
> 
> We issue queries like :
> SELECT model, res_id FROM ir_model_data WHERE module='base' AND 
> name='public_user';


You need to provide the table definition, including indexes.

> Thanks in advance,
> 
> Nicolas
> 
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com