From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 06 Jun 2006 12:47:31 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-core] rt_task_wait_period returning -ETIMEDOUT
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To: =?ISO-8859-15?Q?Ignacio_Garc=EDa_P=E9rez?= <iggarpe@domain.hid>
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Ignacio Garc=EDa P=E9rez wrote:
> Hi,
>=20
> rt_task_wait_period() is spuriously returning -ETIMEDOUT.
>=20
> (spuriously =3D maybe once every two hours with period =3D 500us)
>=20
> I'm using the trunk code and that error code is not mentioned in the
> rt_task_wait_period documentation.
>=20
> Any clues?

testsuite/latency makes use of rt_task_wait_period as well. Already
tried to run it at the same frequency? Does it fail as well?

Further question: Does this error correlate with some real deadline miss
of your application?

SMI&friends might be a reason here, check delays of the testsuite (and
your kernel config, of course). Is the workaround enabled? Is it
reported to be used (kernel log)?

Jan


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