From: Noah Misch <noah@leadboat.com>
To: Andrey Borodin <x4mmm@yandex-team.ru>
Cc: PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Cc: Michael Paquier <michael@paquier.xyz>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Peter Geoghegan <pg@bowt.ie>
Cc: Andres Freund <andres@anarazel.de>
Subject: Re: conchuela timeouts since 2021-10-09 system upgrade
Date: Tue, 9 Nov 2021 20:15:41 -0800
Message-ID: <20211110041541.GA971565@rfd.leadboat.com> (raw)
In-Reply-To: <20211029025600.GB298507@rfd.leadboat.com>
References: <593C6C66-F19E-412A-9896-F1F5B272424A@yandex-team.ru>
<20210925201012.GC4134968@rfd.leadboat.com>
<20211017151205.GA2384251@rfd.leadboat.com>
<9BA43784-E4A7-4638-900C-FC9868C388FA@yandex-team.ru>
<20211019030212.GB3403374@rfd.leadboat.com>
<20211024050028.GA3310519@rfd.leadboat.com>
<64835CF9-D9AA-49BF-A685-01C23B1023C1@yandex-team.ru>
<20211024161942.GB3945842@rfd.leadboat.com>
<640FA6DC-A998-4499-B3B4-2773685B8C56@yandex-team.ru>
<20211029025600.GB298507@rfd.leadboat.com>
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@leadboat.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.
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To: pgsql-bugs@postgresql.org
Cc: noah@leadboat.com, x4mmm@yandex-team.ru, pgsql-bugs@lists.postgresql.org, michael@paquier.xyz, tgl@sss.pgh.pa.us, pg@bowt.ie, andres@anarazel.de
Subject: Re: conchuela timeouts since 2021-10-09 system upgrade
In-Reply-To: <20211110041541.GA971565@rfd.leadboat.com>
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