[Rtai] RTAI on Latitude C840 + setsmi issues

[mantegazza at aero.polimi.it]

>
> On Dec 31, 2009, at 7:12 PM, mantegazza at aero.polimi.it wrote:
>
>>>
>>> On Dec 31, 2009, at 5:33 PM, mantegazza at aero.polimi.it wrote:
>>>
>>>>> Hey All,
>>>>>
>>>>> I am currently compiling rtai on Debian with a 2.6.24.6 kernel,
>>>>> RTAI
>>>>> 3.7.1
>>>>>
>>>>> I have a couple of questions on which I found conflicting reports
>>>>> on
>>>>> the net.
>>>>> This laptop does have ACPI + intel speedstep in the BIOS,
>>>>> would I enable or disable them for best results?
>>>>>
>>>>
>>>> Enabling ACPi is often compulsory. e.g. certain MB see just one CPU
>>>> without it. When it is do I just enable it and nothing help. I'm not
>>>> sure
>>>> there is a general rule to be thought.
>>>>
>>>>>
>>>>> Second.
>>>>>
>>>>> My latency test works fine (although I don't get good results),
>>>>>
>>>>> However when I run the latency test after I run setsmi,
>>>>> then the latency test won't run.
>>>>>
>>>>> dmesg shows me:
>>>>>
>>>>> latency_rt: Unknown symbol nano2count
>>>>> latency_rt: Unknown symbol rt_get_time
>>>>> latency_rt: Unknown symbol rt_task_make_periodic
>>>>> ....
>>>>> ...
>>>>> ...
>>>>>
>>>>>
>>>>> The output of ,.run shows me:
>>>>>
>>>>> rtai_fifos: Unknown symbol reset_rt_fun_ext_index
>>>>> rtai_fifos: Unknown symbol set_rt_fun_ext_index
>>>>> insmod: error inserting '/user/realtime/modules/rtai_fifios.ko': -1
>>>>> unknown symbol in module
>>>>> ERROR: cannot load //user/realtime/modules/rtai_fifios.k
>>>>> ...
>>>>> ...
>>>>> ...
>>>>>
>>>>>
>>>>> After setsmi is executed, there are two rtai modules hanging in the
>>>>> kernel:
>>>>> rtai_sched	98340	1
>>>>> rtai_hal		38428	1	rtai_sched
>>>>>
>>>>>
>>>>>
>>>>> what I would like to try (whether I burn it or not) is to set if
>>>>> setsmi
>>>>> can help me to run this laptop better with rtai.
>>>>>
>>>>> Any suggestions, ideas?
>>>>>
>>>>
>>>> I've tested set/rstsmi but 'm not able to see how it can leave
>>>> rtai_hal
>>>> and rtai_sched behind it, it does not know of them.
>>>
>>> This is correct..
>>>
>>> I have checked this after a reboot, when I run setsmi it doesn0t
>>> leave
>>> anything
>>> hanging around as a module.
>>> Still, after I run setsmi once, then my latency test won't run
>>> anymore.
>>>
>>
>> I've tried many combinations: set/rstsmi then latency; setsmi,
>> latency.
>> latency, rstsmi; latency, setsmi, latency, latency, rstsmi.latency,
>> and so
>> on. I cannot see any problem. I experimented with the newest the
>> 2.6.32.2
>> I'm testing for the new RTAI release, but I do not think it does
>> anything
>> better than any previous release, with respect to SMI.
>
> Tomorrow I will compile a 2.6.32 kernel, just to be sure.
> would it be possible if you send me your linux and rtai config,
> so I can build the same kernel?
>

Be warned that till we release 3.8-test2 you must work with Vulcano CVS to
use 2.6.32.2.

I'll send you with another (personal) email.

paolo

>>
>>> From what I understand setsmi just load's the module, then the module
>>> just does it's job,
>>> then the module is removed. Correct? If this is the case, what reason
>>> could there by for
>>> the latency test not to run?
>>
>> It is correct, but I cannot say anythong about why it does not allow
>> running latency. Di you tried with other tests?
>
> yes, other tests give me similar faults.
>
> Happy new year!!!
>
> Ries
>
>>
>> paolo
>>
>>>
>>> Ries
>>>
>>>>
>>>> paolo
>>>>
>>>>> Ries
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Rtai mailing list
>>>>> Rtai at rtai.org
>>>>> https://mail.rtai.org/cgi-bin/mailman/listinfo/rtai
>>>>>
>>>>
>>>>
>>>
>>>
>>> 			regards, Ries van Twisk
>>>
>>> -------------------------------------------------------------------------------------------------
>>> tags: Freelance TYPO3 Glassfish JasperReports JasperETL Flex Blaze-DS
>>> WebORB PostgreSQL DB-Architect
>>> email: ries at vantwisk.nl        web:   http://www.rvantwisk.nl/
>>> skype: callto://r.vantwisk
>>> Phone: +1-810-476-4196    Cell: +593 9901 7694                   SIP:
>>> +1-747-690-5133
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>
>
> 			regards, Ries van Twisk
>
> -------------------------------------------------------------------------------------------------
> tags: Freelance TYPO3 Glassfish JasperReports JasperETL Flex Blaze-DS
> WebORB PostgreSQL DB-Architect
> email: ries at vantwisk.nl        web:   http://www.rvantwisk.nl/
> skype: callto://r.vantwisk
> Phone: +1-810-476-4196    Cell: +593 9901 7694                   SIP:
> +1-747-690-5133
>
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