Aw: Re: [Xenomai-help] NMI watchdog: Loading of xeno_native leads...

["M. Koehrer" <mathias_koehrer@domain.hid>]

Hi Jan,

I tried to enable the kernel hacking parameters you proposed.
However, now I get a "NMI early shots: 0" message many times per second.
These seems to slow down everything dramatically, it is hard to work with the
system. What are the early shots messages and how can I avoid them?

Regards

Mathias


> > It was the compiler!!! Using gcc-3.3 solved the issue.
> > That means, that somehow gcc-4.1.2 must not be used with Xenomai
> currently...
> 
> OK, this needs some examination then. Can anyone reproduce this issue?
> /me is currently lacking the compiler.
> 
> >  
> > This allowed me to catch the system hang I was hunting for since
> yesterday...
> > And I got it.
> > I write the information I found on the console (I have not tried with
> console redirection yet...).
> > CPU 0, eip c010122d
> > EIP 0060:[<c010122d>]
> > EFLAGS 00000246
> > EIP is at mwait_idle_with_hints+0x2c/0x2e
> > eax:0 ebx:c0498000 ecx:0 edx:0
> > 
> > Call Trace
> > mwait_idle+0x0/0x2e
> > mwait_idle+0x1d/0x2e
> > cpu_idle+0x44/0x86
> > start_kernel+0x1f1/0x1f5
> > unknown_bootoption+0x0/0x191
> 
> Well, this caught your box in the idle loop - not that informative yet.
> We must probably look beyond the last context switch. Please switch on
> the I-pipe tracer (kernel hacking -> I-pipe debugging) and configure
> back_trace_points to, hmm, say 200. On NMI alarm, we should then see a
> function call trace.
> 
> > 
> > I'll try to reproduce the same with console redirection, however, I hope
> this could help already!
> > 
> > Regards
> > 
> > Mathias
> 
> Thanks for your effort,
> 
> Jan
> 
> 

-- 
Mathias Koehrer
mathias_koehrer@domain.hid


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