From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philippe Gerum In-Reply-To: <4A0AC8A6.1000701@domain.hid> References: <4A0AC1C8.4050006@domain.hid> <4A0AC3F9.9090103@domain.hid> <4A0AC8A6.1000701@domain.hid> Content-Type: text/plain Date: Wed, 13 May 2009 15:22:42 +0200 Message-Id: <1242220962.26544.955.camel@domain.hid> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-core] Troubles with switchtest List-Id: Xenomai life and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: xenomai-core On Wed, 2009-05-13 at 15:18 +0200, Jan Kiszka wrote: > Gilles Chanteperdrix wrote: > > Jan Kiszka wrote: > >> Hi Gilles, > >> > >> I'm currently facing a nasty effect with switchtest over latest git head > >> (only tested this so far): running it inside my test VM (ie. with > >> frequent excessive latencies) I get a stalled Linux timer IRQ quite > >> quickly. System is otherwise still responsive, Xenomai timers are still > >> being delivered, other Linux IRQs too. switchtest complained about > >> > >> "Warning: Linux is compiled to use FPU in kernel-space." > >> > >> when it was started. Kernels are 2.6.28.9/ipipe-x86-2.2-07 and > >> 2.6.29.3/ipipe-x86-2.3-01 (LTTng patched in, but unused), both show the > >> same effect. > >> > >> Seen this before? > > > > The warning about Linux being compiled to use FPU in kernel-space means > > that you enabled soft RAID or compiled for K7, Geode, or any other > > RAID is on (ordinary server config). > > > configuration using 3DNow for such simple operations as memcpy. It is > > harmless, it simply means that switchtest can not use fpu in kernel-space. > > > > The bug you have is probably the same as the one described here, which I > > am able to reproduce on my atom: > > https://mail.gna.org/public/xenomai-help/2009-04/msg00200.html > > > > Unfortunately, I for one am working on ARM issues and am not available > > to debug x86 issues. I think Philippe is busy too... > > OK, looks like I got the same flu here. > > Philippe, did you find out any more details in the meantime? Then I'm > afraid I have to pick this up. No, I did not resume this task yet. Working from the powerpc side of the universe here. > > Jan > -- Philippe.