Re: [Xenomai-help] Question on periodic task

[Wong Sheng Chao <wong@domain.hid>]

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?