Re: Non-reproducible AIO failure

Alexander Lakhin <exclusion@gmail.com>

From: Alexander Lakhin <exclusion@gmail.com>

To: Tomas Vondra <tomas@vondra.me>

Cc: pgsql-hackers@lists.postgresql.org, Tom Lane <tgl@sss.pgh.pa.us>, Thomas Munro <thomas.munro@gmail.com>, Andres Freund <andres@anarazel.de>

Date: 2025-05-27T14:00:01Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

aio: Stop using enum bitfields due to bad code generation
- ce161b194e84 18.0 landed
- 5865150b6d53 19 (unreleased) landed
amcheck: Fix posting tree checks in gin_index_check()
- 0cf205e122ae 18.0 cited
aio: Add missing memory barrier when waiting for IO handle
- e9a3615a5224 18.0 landed

Hello Tomas,

27.05.2025 16:26, Tomas Vondra wrote:
> I'm interested in how you run these tests in parallel. Can you share the
> patch/script?

Yeah, sure. I'm running the test as follows:
rm -rf src/test/recovery_*; for i in `seq 40`; do cp -r src/test/recovery/ src/test/recovery_$i/; sed -i .bak 
"s|src/test/recovery|src/test/recovery_$i|" src/test/recovery_$i/Makefile; done
PROVE_TESTS="t/027*" make -s check -s -C src/test/recovery

for i in `seq 100`; do echo "iteration $i"; parallel -j40 --linebuffer --tag PROVE_TESTS="t/027*" NO_TEMP_INSTALL=1 make 
-s check -s -C src/test/recovery_{} ::: `seq 8` || break;  done; echo -e "\007"

Alexander Lakhin
Neon (https://neon.tech)