Re: [Xenomai-help] the system has halted while running xeno-test

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

Hugo Braga wrote:
> Hi,
> 
> I desabled xeno_irqbench as Jan Kiszka told me to but the system keeps
> without response. Sometimes when I run xeno-test, the system stops
> working after this message has been shown:
> ...
> running: cat /proc/xenomai/rtdm/named_devices
> Ter Nov  6 15:52:15 BRT 2007
> running: cat /proc/xenomai/rtdm/protocol_devices
> Hash	ProtocolFamily:SocketType	Driver		/proc
> 
> Ter Nov  6 15:52:15 BRT 2007
> running: top -bn1c
> top - 15:52:16 up  3:59,  3 users,  load average: 4.61, 4.08, 2.87
> Tasks:  80 total,   6 running,  74 sleeping,   0 stopped,   0 zombie
> Cpu(s): 16.0%us, 11.9%sy,  1.0%ni, 70.3%id,  0.9%wa,  0.0%hi,  0.0%si,  0.0%st
> Mem:    507600k total,   500820k used,     6780k free,    13272k buffers
> Swap:   979924k total,       40k used,   979884k free,   330728k cached
> 
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  8715 root      25   0  2880  560  460 R 19.7  0.1  10:17.42 dd if /dev/zero of
>  9220 root      25   0  2880  556  460 R 19.7  0.1   6:37.86 dd if /dev/zero of
>  9695 root      25   0  2880  556  460 R 19.7  0.1   3:50.25 dd if /dev/zero of
> 
> Ter Nov  6 15:52:16 BRT 2007
> running: ./run -- -sh -T 120 -t0 # latency
> *
> *
> * Type ^C to stop this application.
> *
> *
> ...
> 
> Sometimes it completes latency test 1 and 2 but halts at latency test
> 3. In both cases I have to reboot the machine. Even when it completes
> latency test 1 or 2, it takes a long time to start showing this
> message:
> ...
> == Sampling period: 100 us
> == Test mode: periodic user-mode task
> == All results in microseconds
> warming up...
> RTT|  00:00:01  (periodic user-mode task, 100 us period, priority 99)
> ...
> 
> When I disabled "Processor type and features->Symmetric
> multi-processing support" and "Processor type and features->Multi-core
> scheduler support" in the kernel's configuration file, the system
> didn't stop, althought the latency has increased.

By what did it increase precisely? Hundreds or more of microseconds? Do
you have SMI disabled in your box (see kernel messages)?

> 
> My machine is:
> Intel Core 2 Duo 2.00GHz
> Intel Deskop Board D946GZIS
> I built linux 2.6.19.7 linux kernel with xenomai 2.3.4 and
> adeos-ipipe-2.6.19-i386-1.7-03.patch

Can you retry your .config over 2.6.23? Recent fixes for I-pipe did not
make it into 2.6.19 patches any more (2.6.20 and 2.6.22 should be OK as
well) - just to exclude that we are hunting a fixed bug here. Then, we
also need your .config to scan for correlations with "usual problems".

Thanks,
Jan

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