From: Sebastian Andrzej Siewior <sebastian.siewior@linutronix.de>
To: He Zhe <zhe.he@windriver.com>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: WARNING when running cyclictest
Date: Fri, 5 Oct 2018 13:10:17 +0200 [thread overview]
Message-ID: <20181005111017.gmctslwfgnhtdsul@linutronix.de> (raw)
In-Reply-To: <043561c1-3fc1-5cbc-9cec-a87e39e0218a@windriver.com>
On 2018-09-20 23:22:58 [+0800], He Zhe wrote:
> Hi,
Hi.
> When running cyclictest on latest preempt-rt kernel I met the following the WARNING. It only happens when "taskset -c 0" and "-c 1"(CLOCK_REALTIME) is specified in the command line. After bisecting, it seems this happens since v4.13-rt1. Is this possibly a bug?
>
> taskset -c 0 cyclictest -p 80 -i 1000 -l 10000 -c 1 -q
This is known and mentioned at the bottom of the release notes. I would
suggest to use clock_nanosleep() (see that -n parameter) which should be
preferred over the other timer interfaces.
> Zhe
Sebastian
prev parent reply other threads:[~2018-10-05 18:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 15:22 WARNING when running cyclictest He Zhe
2018-10-05 11:10 ` Sebastian Andrzej Siewior [this message]
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