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help / color / mirror / Atom feedFrom: Andres Freund <andres@anarazel.de>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Make after-startup shmem failure test reliable
Date: Tue, 01 Sep 2026 18:50:24 +0000
Message-ID: <E1x1TYs-000000034c8-3yZU@gemulon.postgresql.org> (raw)
Make after-startup shmem failure test reliable
The test expects a 128 kB request to exceed the shared memory available after
startup. Huge pages can round up the main shared memory segment enough for
that request to succeed, defeating the test.
Disable huge pages for the allocation-failure phase so that it exercises the
intended error path independently of shared memory segment rounding.
Author: Ayush Tiwari <ayushtiwari.slg01@gmail.com>
Reported-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/rpkhzrrmo7qiz7rr3qlufksb2oci33wcg3ao75le7dqindgoif@6yozkjwb6bdf
Backpatch-through: 19
Branch
------
REL_19_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/61e64cb19a08c23dca1df46f1ae09df514059fc6
Modified Files
--------------
src/test/modules/test_shmem/t/001_late_shmem_alloc.pl | 3 +++
1 file changed, 3 insertions(+)
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To: pgsql-committers@postgresql.org
Cc: andres@anarazel.de, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Make after-startup shmem failure test reliable
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