Wong Sheng Chao wrote:
> On 01/16/2011 12:03 AM, Gilles Chanteperdrix wrote:
>> Wong Sheng Chao wrote:
>>> Hi
>>>
>>> I'm a newbie in real time programming and I recently came to know of
>>> Xenomai. After patching the Xenomai to the linux kernel, I ran some
>>> examples that I found from the Internet to get a better understanding of
>>> the periodic task. Everything seems to run fine when I start two tasks
>>> with period of 1s and 2s, but the system freezes when I added more tasks
>>> ( more than 2 tasks). The period is at 1s, 2s and 3s so i think the
>>> processor has more than enough time to process the tasks.
>>>
>>> I also read that the periodic mode is emulated by a software driver
>>> which uses one-shot mode programming. Thus i did not enable periodic
>>> timing when I compile the Linux kernel, is this the cause of the problem?
>>>
>>> I'm using a system with Core i7, ubuntu 10.04, linux kernel 2.6.32.15,
>>> xenomai 2.5.4
>>>
>>> Do let me know what I did wrong in the code, thanks in advance!!
>> You almost send us all the information we ask on this page:
>> http://www.xenomai.org/index.php/Request_for_information
>>
>> We lack:
>> - the version of the Adeos patch you use
>> - the kernel logs from the boot up to the bug itself.
>>
>
> - the version of the Adeos patch you use
>
> I'm using the Adeos patch 2.6.32.15-x86-2.7-01.patch
>
> - the kernel logs from the boot up to the bug itself.
>
> I was not sure how to do this, so I google online and it seems that
> there are two ways of doing this, through serial port or ethernet.
> However I have only one linux system setup. Any suggestion on how I can
> provide the kernel logs?
>
> After the kernel freezes, I reboot the system and went to /var/log to
> check the kern.log file at the time of the bug, but no logs were made on
> that particular time, is netconsole or serial port the only method of
> troubleshooting?
You can try booting in text mode, and set the vga mode to have a lot of
lines, then run the test in text mode, to at least see if the reason of
the freeze you observe is a kernel oops.
If you do not see anything, then enable all the I-pipe and Xenomai
debugs, and try again.
--
Gilles.
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