| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Alexander Lakhin <exclusion(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: Non-reproducible AIO failure |
| Date: | 2025-05-27 13:35:09 |
| Message-ID: | xo724wfdjssrcy2ihgzwv6fakwjkyumwu326m3hga3tdpsquuk@ryjdwhbomvqa |
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| Lists: | pgsql-hackers |
Hi,
On 2025-05-25 20:05:49 -0400, Tom Lane wrote:
> Thomas Munro <thomas(dot)munro(at)gmail(dot)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
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