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pgsql: Make after-startup shmem failure test reliable 2+ messages / 1 participants [nested] [flat]
* pgsql: Make after-startup shmem failure test reliable @ 2026-09-01 18:50 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 2+ messages in thread From: Andres Freund @ 2026-09-01 18:50 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org 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 ------ master Details ------- https://git.postgresql.org/pg/commitdiff/e916927cfbc0e6aed4dfe0d6018c42abc7fc493c Modified Files -------------- src/test/modules/test_shmem/t/001_late_shmem_alloc.pl | 3 +++ 1 file changed, 3 insertions(+) ^ permalink raw reply [nested|flat] 2+ messages in thread
* pgsql: Make after-startup shmem failure test reliable @ 2026-09-01 18:50 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 2+ messages in thread From: Andres Freund @ 2026-09-01 18:50 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org 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(+) ^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2026-09-01 18:50 UTC | newest] Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2026-09-01 18:50 pgsql: Make after-startup shmem failure test reliable Andres Freund <andres@anarazel.de> 2026-09-01 18:50 pgsql: Make after-startup shmem failure test reliable Andres Freund <andres@anarazel.de>
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