From: Petr Vorel <pvorel@suse.cz>
To: Andrea Cervesato <andrea.cervesato@suse.com>
Cc: ltp@lists.linux.it
Subject: Re: [LTP] [PATCH v1] Fix synchronization problem with dio tests
Date: Mon, 29 Jan 2024 18:36:04 +0100 [thread overview]
Message-ID: <20240129173604.GA621069@pevik> (raw)
In-Reply-To: <76d62bc7-ce36-45d6-8f8a-bb6602e3e27b@suse.com>
> Hi!
> On 1/29/24 16:01, Cyril Hrubis wrote:
> > Hi!
> > > When system is really fast processing I/O syscalls, multiple childrean
> > > running I/O operations might lock the parent, causing
> > > tst_reap_childrean() to stuck. By adding a small usleep at the
> > > end of the reading I/O operations, which are used by dio_append and
> > > dio_read tests, we ensure that system has enough breath to end tests
> > > correctly and to process children exit.
> > This does smell like a kernel bug to be honest.
> I thought the same at first, but I didn't find issues in the kernel. We can
> take a look deeper for sure.
> > Which test is this? How to reproduce?
FYI It's ADI000 => dio_append (without params), which is failing on s39Ox on SLE
15-SP6. It runs pretty quickly on other common archs.
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
prev parent reply other threads:[~2024-01-29 17:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-29 10:14 [LTP] [PATCH v1] Fix synchronization problem with dio tests Andrea Cervesato
2024-01-29 10:32 ` Petr Vorel
2024-01-29 15:01 ` Cyril Hrubis
2024-01-29 15:41 ` Andrea Cervesato via ltp
2024-01-29 17:36 ` Petr Vorel [this message]
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