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: Thu, 16 Oct 2025 17:06:23 +0200
Message-ID: <aPEJ7yH7ZJAF_MYW@msg.df7cb.de> (raw)
In-Reply-To: <aPEHINwaAxsQNAIP@msg.df7cb.de>
References: <E1u1tr8-003BbN-2E@gemulon.postgresql.org>
<aPDZOxjrmEo_1JRG@msg.df7cb.de>
<7bbc582b-cc70-4a6f-bbf2-b5fd9b13a867@vondra.me>
<aPEHINwaAxsQNAIP@msg.df7cb.de>
Re: To Tomas Vondra
> It's the very same kernel, just different docker containers on the
> same system. I did not investigate yet where the problem is coming
> from, different libnuma versions seemed like the best bet.
numactl shows the problem already:
Host system:
$ numactl --show
policy: default
preferred node: current
physcpubind: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
cpubind: 0
nodebind: 0
membind: 0
preferred:
debian:trixie-slim container:
$ numactl --show
physcpubind: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
No NUMA support available on this system.
debian:bookworm-slim container:
$ numactl --show
get_mempolicy: Operation not permitted
get_mempolicy: Operation not permitted
get_mempolicy: Operation not permitted
get_mempolicy: Operation not permitted
policy: default
preferred node: current
physcpubind: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
cpubind: 0
nodebind: 0
membind: 0
preferred:
Running with sudo does not change the result.
So maybe all that's needed is a get_mempolicy() call in
pg_numa_available() ?
Christoph
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To: pgsql-hackers@postgresql.org
Cc: myon@debian.org, tomas@vondra.me, jakub.wartak@enterprisedb.com, pgsql-hackers@lists.postgresql.org
Subject: Re: failed NUMA pages inquiry status: Operation not permitted
In-Reply-To: <aPEJ7yH7ZJAF_MYW@msg.df7cb.de>
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