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From: Christoph Berg <myon@debian.org>
To: Tomas Vondra <tomas@vondra.me>
Cc: Jakub Wartak <jakub.wartak@enterprisedb.com>
Cc: pgsql-hackers@lists.postgresql.org
Subject: Re: failed NUMA pages inquiry status: Operation not permitted
Date: Tue, 16 Dec 2025 18:54:46 +0100
Message-ID: <aUGc5qh977Y4r_jP@msg.df7cb.de> (raw)
In-Reply-To: <183fe9ab-6010-4cca-b648-1deca332ce2a@vondra.me>
References: <aPEJ7yH7ZJAF_MYW@msg.df7cb.de>
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	<54329add-59b6-4c08-96f0-a025a7804174@vondra.me>
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	<183fe9ab-6010-4cca-b648-1deca332ce2a@vondra.me>

Re: Tomas Vondra
> 1) right after opening a connection, I get this
> 
> test=# select numa_node, count(*) from pg_buffercache_numa group by 1;
>  numa_node | count
> -----------+-------
>          0 |   290
>         -2 | 32478

Does that mean that the "touch all pages" logic is missing in some
code paths?

But even with that, it seems to be able to degenerate again and
accepting -2 in the regression tests would be required to make it
stable.

Christoph





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