Re: [Xenomai-help] xeno-test hangs during latency test

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Steve wrote:
> On 28/05/2009, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org> wrote:
>> Steve wrote:
>>> On 27/05/2009, Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
>>> wrote:
>>>> Philippe Gerum wrote:
>>>>> On Wed, 2009-05-27 at 18:48 +0200, Gilles Chanteperdrix wrote:
>>>>>> Steve wrote:
>>>>>>> After installing the latest version of Xenomai last week I have
>>>>>>> encountered a problem with Xenomai applications hanging linux
>>>>>>> completely, requiring restart.  This has also occured while running
>>>>>>> xeno-test, during the latency tests.
>>>>>>>
>>>>>>> I have tried to follow the various suggestions on this board about
>>>>>>> preventing hanging of Xenomai, however I am still experiencing the
>>>>>>> problem.
>>>>>>>
>>>>>>> I am using:
>>>>>>> Vanilla Linux Kernel 2.6.24
>>>>>>> Adeos Patch 2.6.24-x86-2.0-07
>>>>> ^^^^^
>>>> Yeah, right, please try the latest version, Xenomai 2.4.7, and the
>>>> patches it contains. If you need debian packages, the package ship with
>>>> its own debian directory allowing to build the packages from sources. If
>>>> it does not work, then report bugs.
>>>>
>>>> Also, depending on your deadlines, 2.4.8 should be out soon, so you may
>>>> want to wait for this release.
>>>>
>>>> --
>>>>                                                  Gilles.
>>>>
>>> When I first installed Xenomai I used the latest Adeos patch (at the
>>> time) instead of the one corresponding directly to my kernel (eg
>>> 2.6.27 patch for 2.6.24 kernel).  This did not work.  Once I used the
>>> latest of the corresponding patches (2.6.24) it seemed to work, so I
>>> have been using that combination ever since, and there has not been a
>>> newer Adeos patch for that kernel since.  Am I correct in thinking
>>> that you must use an Adeos patch that corresponds to your particular
>>> kernel (this makes sense, although it is not stated in the readme's)?
>> Yes, you are right, and it is stated in the readme: "Apply one of the
>> patches found into this directory against the corresponding kernel release."
>>
>>> If so, then I must use a newer linux kernel to use a later adeos
>>> patch, which is fine, I will try it after testing with a serial port.
>>> If not, then I'll use the latest adeos patch that comes with the 2.4.7
>>> release and let you kow the results.
>> Yes, please use a more recent version, there were fixes recently on x86.
>>
>> --
>> 					    Gilles.
>>
> 
> Ah, yes, in the patch folder readme, I somehow missed the all important word.
> 
> More importantly, I am now running:
> Vanilla Linux Kernel: 2.6.29.4
> Adeos Patch: adeos-ipipe-2.6.29.4-x86-2.4-01.patch
> Xenomai Version: 2.4.7
> 
> Due to the change in kernel my config file is now different.  The
> primary change that may be relevant based on previous postings is that
>  CONFIG_CPU_IDLE is now set, because it will not disable unless ACPI
> is completely disabled.
> 
> The OS still hangs during the latency test of xeno-test, but I now
> have the attached output from the kernel console (including the final
> initialisation message ('boot scripts') before the hang).

Ok. Could you send us a disassembly of the xntimer_next_local_shot
function ? As well as the value of the cpu frequency and the APIC
frequency on your system ?

> 
> Steve
> 
> 
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-- 
                                                 Gilles.