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From: Jakub Wartak <[email protected]>
To: Christoph Berg <[email protected]>
Cc: Tomas Vondra <[email protected]>
Cc: [email protected]
Subject: Re: failed NUMA pages inquiry status: Operation not permitted
Date: Tue, 6 Jan 2026 14:23:33 +0100
Message-ID: <CAKZiRmwV_O73DdSosD-k62kS2wWPc3C8mRZY8j9ozfOu5OLLjg@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On Mon, Jan 5, 2026 at 11:30 PM Christoph Berg <[email protected]> wrote:
>
> Re: Tomas Vondra
> > I guess the only solution is to accept -2 as a possible value (unknown
> > node). But that makes regression testing harder, because it means the
> > output could change a lot ...

Hi Tomas! That's pretty wild, nice find about that swapping s_b thing!
So just to confirm, that was reproduced outside containers/docker,
right?

> Or just not test that, or do something like
>
> select numa_node = -2 or numa_node between 0 and 1000 from pg_shmem_allocations_numa;

Well, with the huge-pages it should be not swappable, so another idea
would be simply alter first line of src/test/regress/sql/numa.sql and
sql/pg_buffercache_numa.sql just like below:
- SELECT NOT(pg_numa_available()) AS skip_test \gset
+ SELECT (pg_numa_available() is false OR
current_setting('huge_pages_status')::bool is false) as skip_test
\gset

(I'm making assumption that there are buildfarm animals that
huge_pages enabled, no idea how to check that)

-J.

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