Horton

Re: Non-reproducible AIO failure

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Konstantin Knizhnik <knizhnik@garret.ru>
Cc: Andres Freund <andres@anarazel.de>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2025-06-17T00:22:00Z
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 →

  1. aio: Stop using enum bitfields due to bad code generation

  2. amcheck: Fix posting tree checks in gin_index_check()

  3. aio: Add missing memory barrier when waiting for IO handle

Konstantin Knizhnik <knizhnik@garret.ru> writes:
> On 16/06/2025 6:11 pm, Andres Freund wrote:
>> I unfortunately can't repro this issue so far.

> But unfortunately it means that the problem is not fixed.

FWIW, I get similar results to Andres' on a Mac Mini M4 Pro
using MacPorts' current compiler release (clang version 19.1.7).
The currently-proposed test case fails within a few minutes on
e9a3615a5^ but doesn't fail in a couple of hours on e9a3615a5.

However, I cannot repro that on a slightly older Mini M1 using Apple's
current release (clang-1700.0.13.5, which per wikipedia is really LLVM
19.1.4).  It seems to work fine even without e9a3615a5.  So the whole
thing is still depressingly phase-of-the-moon-dependent.

I don't doubt that Konstantin has found a different issue, but
it's hard to be sure about the fix unless we can get it to be
more reproducible.  Neither of my machines has ever shown the
symptom he's getting.

			regards, tom lane