From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: "Jens Köhler" <jenskxxx@googlemail.com>
Cc: Xenomai <xenomai@xenomai.org>
Subject: Re: [Xenomai] Xenomai and normal linux application - Wait time with select() not reliable
Date: Mon, 21 Jan 2013 13:09:30 +0100 [thread overview]
Message-ID: <50FD2FFA.9010002@xenomai.org> (raw)
In-Reply-To: <CAL7_A_XHtj19V3gnog7_Hoer6UGxRJfoFwT0sgzQvhtARB3b9A@mail.gmail.com>
On 01/21/2013 01:06 PM, Jens Köhler wrote:
> Hello Gilles,
>
> 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."
>
> Do you think it should work without problems, without delays, latencies?
> Do you know if someone has already used linux semaphores in a xenomai thread?
> 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.
--
Gilles.
next prev parent reply other threads:[~2013-01-21 12:09 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-03 13:30 [Xenomai] Xenomai and normal linux application - Wait time with select() not reliable Jens Köhler
2012-07-03 21:53 ` Gilles Chanteperdrix
2012-07-04 8:36 ` Jens Köhler
2012-07-04 8:45 ` Gilles Chanteperdrix
2012-07-04 10:06 ` Philippe Gerum
2012-07-04 11:45 ` Jens Köhler
2012-07-04 12:04 ` Gilles Chanteperdrix
[not found] ` <CAL7_A_VQe-KGBoYq034hT=6CdJJPpwEQTs1EgDQ=325WjOfUzw@mail.gmail.com>
2012-07-04 12:57 ` Gilles Chanteperdrix
2012-07-04 13:10 ` Jens Köhler
2012-07-04 13:17 ` Jens Köhler
2012-07-04 13:22 ` Gilles Chanteperdrix
[not found] ` <CAL7_A_WTJUeWNTTra2t9veiyWMxC5VtpotocMHGPdU1v7QAxKA@mail.gmail.com>
[not found] ` <4FF44C52.6050809@xenomai.org>
[not found] ` <CAL7_A_VUC8JD9yeMnLt2iJQ0ex_at3QMhiL3cQ5CHPFh0rcJRA@mail.gmail.com>
[not found] ` <4FF585C4.1000708@xenomai.org>
2012-11-19 13:29 ` Jens Köhler
2012-11-19 13:42 ` Gilles Chanteperdrix
2012-12-03 7:59 ` Jens Köhler
2012-12-03 9:26 ` Gilles Chanteperdrix
2012-12-04 10:09 ` Jens Köhler
[not found] ` <CAL7_A_XHtj19V3gnog7_Hoer6UGxRJfoFwT0sgzQvhtARB3b9A@mail.gmail.com>
2013-01-21 12:09 ` Gilles Chanteperdrix [this message]
[not found] ` <CAL7_A_Wkjj1mTeDcEfDzPKFkQhiYeChPgC=ggVkedxqy=yaLng@mail.gmail.com>
2013-01-21 18:48 ` Gilles Chanteperdrix
2012-07-04 13:33 ` Philippe Gerum
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