From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <50FD2FFA.9010002@xenomai.org>
Date: Mon, 21 Jan 2013 13:09:30 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] Xenomai and normal linux application - Wait time with
 select() not reliable
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To: =?UTF-8?B?SmVucyBLw7ZobGVy?= <jenskxxx@googlemail.com>
Cc: Xenomai <xenomai@xenomai.org>

On 01/21/2013 01:06 PM, Jens K=C3=B6hler wrote:

> Hello Gilles,
>=20
> I did not understand your latests statement. What do you mean with "If
> you expect a task using a Linux semaphore to have bounded latencies,
> you misunderstood the way Xenomai works."
>=20
> Do you think it should work without problems, without delays, latencies=
?
> Do you know if someone has already used linux semaphores in a xenomai t=
hread?
> What do you recommend to find reason and a solution?


Using a Linux semaphore causes a switch to secondary mode, which means
potentially unbounded latencies.

Please keep the list in CC.

--=20
                                                                Gilles.