From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Fabien MAHOT <fabien.mahot@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Posix timers increase
Date: Wed, 9 Apr 2008 16:39:43 +0200 [thread overview]
Message-ID: <18428.54575.238202.690441@domain.hid> (raw)
In-Reply-To: <14532.81.252.86.91.1207740558.squirrel@domain.hid>
Fabien MAHOT wrote:
> > Hello,
> >
> > I ve got an application in which I create a lot of posix timers (with
> > timer_create). After a while timer_create returns an error. There is no
> > available timer. I would like to increase the timer amount. How can I do
> > this ? there is a link with "Size of the system heap" kernel configuration
> > option ?
> >
> > thanks a lot
> >
>
>
> folder xenomai : ksrc/skins/posix/timer.c : #define PSE51_TIMER_MAX 128
Beware: posix timers use signals, and signals in user-space cause the
target thread to switch to secondary mode. So, timers are or little use
in user-space. You would better use clock_nanosleep, or
pthread_make_periodic_np/pthread_wait_np.
--
Gilles.
next prev parent reply other threads:[~2008-04-09 14:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-17 14:43 [Xenomai-help] Application crash Fabien MAHOT
2008-03-17 18:23 ` Gilles Chanteperdrix
2008-03-18 17:18 ` Fabien MAHOT
2008-03-19 8:42 ` Gilles Chanteperdrix
2008-03-19 11:55 ` Fabien MAHOT
2008-03-19 13:13 ` Gilles Chanteperdrix
2008-03-19 14:00 ` Fabien MAHOT
2008-03-19 15:33 ` Fabien MAHOT
2008-03-24 13:11 ` Gilles Chanteperdrix
2008-03-24 17:27 ` Gilles Chanteperdrix
2008-03-24 22:15 ` Gilles Chanteperdrix
2008-03-25 17:04 ` Fabien MAHOT
2008-03-25 17:37 ` Gilles Chanteperdrix
2008-03-26 9:14 ` Fabien MAHOT
2008-03-26 9:36 ` Gilles Chanteperdrix
2008-03-26 10:06 ` Fabien MAHOT
2008-03-26 19:58 ` Gilles Chanteperdrix
2008-03-27 9:51 ` Fabien MAHOT
2008-04-03 8:59 ` Fabien MAHOT
2008-04-09 9:00 ` [Xenomai-help] Posix timers increase Fabien MAHOT
2008-04-09 11:29 ` Fabien MAHOT
2008-04-09 14:39 ` Gilles Chanteperdrix [this message]
2008-04-09 14:45 ` Breno Carneiro Pinheiro
2008-03-26 10:35 ` [Xenomai-help] Application crash Fabien MAHOT
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