Re: conchuela timeouts since 2021-10-09 system upgrade

> 10 нояб. 2021 г., в 09:15, Noah Misch <noah(at)leadboat(dot)com> написал(а):
>
> On Thu, Oct 28, 2021 at 07:56:00PM -0700, Noah Misch wrote:
>> On Sun, Oct 24, 2021 at 09:03:27PM +0300, Andrey Borodin wrote:
>>>> 24 окт. 2021 г., в 19:19, Noah Misch <noah(at)leadboat(dot)com> написал(а):
>>>> These failures started on 2021-10-09, the day conchuela updated from DragonFly
>>>> v4.4.3-RELEASE to DragonFly v6.0.0-RELEASE. It smells like a kernel bug.
>>>> Since the theorized kernel bug seems not to affect
>>>> src/test/subscription/t/015_stream.pl, I wonder if we can borrow a workaround
>>>> from other tests. One thing in common with src/test/recovery/t/017_shm.pl and
>>>> the newest failure sites is that they don't write anything to the child stdin.
>>
>>>> If not, does passing the script via stdin, like "pgbench -f-
>>>> <script.sql", work around the problem?
>>>
>>> I'll test it tomorrow, the refactoring does not seem trivial given we use many simultaneous scripts.
>>
>> Did that work? Commit 7f580aa should make this unnecessary for v12+
>> contrib/amcheck tests, but older branches still need a fix, and 017_shm.pl
>> needs a fix in all branches. A backup plan is just to skip affected tests on
>> dragonfly 6+. Since the breakage has been limited to so few tests, I'm
>> optimistic that a better workaround will present itself.
>
> Is this still in your queue, or not? The conchuela breakage in
> src/test/recovery and v11+v10 src/bin/pgbench is a large source of buildfarm
> noise right now.
Uh, sorry, this problem fell out of my attention somehow. I'll try to do something with 10 and 11 this or next week.

Best regards, Andrey Borodin.