From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4C067CCE.1050501@domain.hid> Date: Wed, 02 Jun 2010 17:46:22 +0200 From: Gilles Chanteperdrix MIME-Version: 1.0 References: In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] xeno-test problem List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Cyril Wallois Cc: xenomai@xenomai.org Cyril Wallois wrote: > Hi all, > > I have a problem when I try to load xeno-test, at the begining, I Though > it comes from a too low sampling period on the latency test. > I run xenomai 2.4.8 with linux 2.6.26 on a PXA270 (toradex colibri). I > should not have these problem with newer kernel and version of xenomai. Apparently I did not make myself clear on the rtnet mailing list: since you mentioned a crash, then it means that you have a kernel oops or something. There is nothing we can do if you do not show us the oops message on the serial console. If you do not see anything after: == Sampling period: 100 us == Test mode: periodic user-mode task == All results in microseconds warming up... Then your problem is indeed not a crash, but the known lockup with too short frequencies on ARMs. Note that if you upgrade to Xenomai 2.5.3, you will be able to enable the FCSE option and unlocked context switches, which should improves the latencies. -- Gilles.