Re: [Xenomai-help] hard lock-up

[Jan Kiszka <jan.kiszka@domain.hid>]

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andy motten wrote:
>> Klaas Gadeyne wrote:
>>> On Fri, 10 Aug 2007, Jan Kiszka wrote:
>>> [..]
>>>> BTW, given that the SMI workaround is infunctional on your system: Do
>>>> you get reasonable latencies ATM? It looked to me like the NMI
>> watchdog
>>>> might have triggered due to SMI-related delays.
>>> We do get very reasonable latencies once the AGP functionality is
>>> turned off (otherwise, latencies are pathetic).  Note that we haven't
>>> sorted out whether the buggy behaviour and huge latencies are due to
>>> the AGP bus in general or too the specific intel_something_els_here
>>> driver.
>> Did you try the "noaccel" option, as explained in the FAQ ?
>>
> 
> Yes, but there was no change in performance.

You mean latency?

> 
> We have tried several configurations of the system, and we get no hard
> lockups anymore.
> Even the configurations that used to lockup are working now without a
> problem.
> 
> Maybe we forget something, but to be honest, we have no idea what triggered
> this change in behavior.
> Thanks for all the help.
> As soon as we know something more about this 'random' behavior, We will post
> it.

And the pathetic latencies might be worth a look using the latency
tracer. Just to be sure it's no software issue. Is there any known
non-broken real-time Linux installation for your board, or did you just
try it out for the first time?

Jan


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