From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] New scheduler class
Date: Fri, 02 Apr 2010 02:11:47 +0200 [thread overview]
Message-ID: <4BB53643.2080604@domain.hid> (raw)
In-Reply-To: <4BB53566.3010601@domain.hid>
Jan Kiszka wrote:
> Andreas Glatz wrote:
>> Hi Philippe,
>>
>> At the Xenomai Users Meeting last year I asked you if Xenomai would offer a possibility to lower the priority of certain Xenomai tasks below that of Linux. We need this feature since we have tasks in our RT application which should only run when Linux is idle (A statistics collection task which part of the RT application and hard to isolate from this application).
>>
>
> What prevents using a borderline thread (if you need to interact with
> blocking Xenomai services) with SCHED_OTHER and a Linux nice level of 19?
Well, this does not really guarantee that the thread will run only when
linux is idle. The thread will eat some cpu time, the nice level is not
a strict priority, as you know. But in fact, I wonder why Andreas wants
a new scheduling policy for xenomai, what is needed, is simply a
SCHED_IDLE (maybe it exists ?!) policy for Linux.
--
Gilles.
next prev parent reply other threads:[~2010-04-02 0:11 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-01 23:08 [Xenomai-help] New scheduler class Andreas Glatz
2010-04-02 0:08 ` Jan Kiszka
2010-04-02 0:11 ` Gilles Chanteperdrix [this message]
2010-04-02 7:58 ` Henri Roosen
2010-04-02 8:06 ` Gilles Chanteperdrix
2010-04-02 8:27 ` Gilles Chanteperdrix
2010-04-02 9:18 ` Jan Kiszka
2010-04-02 9:24 ` Jan Kiszka
2010-04-02 9:27 ` Gilles Chanteperdrix
2010-04-02 9:32 ` Henri Roosen
2010-04-02 9:34 ` Gilles Chanteperdrix
2010-04-02 9:43 ` Henri Roosen
2010-04-02 10:07 ` Jan Kiszka
2010-04-04 23:04 ` Andreas Glatz
2010-04-06 6:45 ` Jan Kiszka
2010-04-15 0:19 ` Andreas Glatz
2010-04-15 9:02 ` Philippe Gerum
2010-04-20 14:12 ` Andreas Glatz
2010-04-23 10:54 ` Philippe Gerum
2010-09-30 12:52 ` Henri Roosen
2010-09-30 13:29 ` Gilles Chanteperdrix
2010-10-04 11:02 ` Philippe Gerum
2010-10-04 13:14 ` Henri Roosen
2010-10-10 21:17 ` Philippe Gerum
2010-04-15 10:46 ` Philippe Gerum
2010-04-15 12:36 ` Andreas Glatz
2010-04-15 12:40 ` Gilles Chanteperdrix
2010-04-15 12:59 ` Andreas Glatz
2010-04-15 13:15 ` Gilles Chanteperdrix
2010-04-16 15:29 ` Andreas Glatz
2010-04-16 15:57 ` Gilles Chanteperdrix
2010-04-02 10:00 ` Jan Kiszka
2010-04-02 10:02 ` Gilles Chanteperdrix
2010-04-02 8:26 ` Jan Kiszka
2010-04-02 8:29 ` Gilles Chanteperdrix
2010-04-02 8:58 ` Jan Kiszka
2010-04-02 9:03 ` Jan Kiszka
2010-04-02 9:24 ` Gilles Chanteperdrix
2010-04-02 10:02 ` Jan Kiszka
2010-04-02 10:05 ` Gilles Chanteperdrix
2010-04-02 10:12 ` Jan Kiszka
[not found] <mailman.6356.1286778008.12503.xenomai@xenomai.org>
2010-10-11 9:31 ` Andreas Glatz
2010-10-11 15:35 ` Henri Roosen
2010-10-12 7:16 ` Henri Roosen
2011-03-28 10:56 ` Henri Roosen
2011-03-28 11:44 ` Philippe Gerum
2011-05-01 15:01 ` Philippe Gerum
2011-05-02 8:58 ` Henri Roosen
2011-05-05 13:55 ` Philippe Gerum
2011-05-05 14:40 ` Henri Roosen
2011-06-28 9:26 ` Henri Roosen
2011-06-28 9:33 ` Philippe Gerum
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