Re: Non-reproducible AIO failure

Hi,

On 2025-05-25 20:05:49 -0400, Tom Lane wrote:
> Thomas Munro <thomas.munro@gmail.com> writes:
> > Could you guys please share your exact repro steps?
> 
> I've just been running 027_stream_regress.pl over and over.
> It's not a recommendable answer though because the failure
> probability is tiny, under 1%.  It sounded like Alexander
> had a better way.

Just FYI, I've been trying to reproduce this as well, without a single failure
so far. Despite running all tests for a few hundred times (~2 days) and
027_stream_regress.pl many hundreds of times (~1 day).

This is on a m4 mac mini.  I'm wondering if there's some hardware specific
memory ordering issue or disk speed based timing issue that I'm just not
hitting.

Greetings,

Andres Freund