Abhijit Majumdar wrote:
> Hi Philippe
>
> I have attached a standalone test program which crashes my system. It
> uses poxis skin to create a simple task which sleeps for 10 micro sec
> and wakes up and continues to do so until the user kills the process.
>
> Interesting things note --
>
> 1. If I uncomment the printf statement at the beginning of the
> while loop the program does not crash any more.
> 2. OR if I use rt_task_sleep instead of clock_nanosleep it does
> not crash.
>
> I am using xenomai 2.5.2 and the arm platform has kernel 2.6.28.
That is a not vague. In any case, 10us on an ARM is much too short. As I
think I already told someone at pivotal systems, ARM latencies are
larger than 50 us, and most of the time larger than 100us. So, asking
for a 10us sleep is preposterous.
However, if you want your report to be useful:
- please try the latest version (that would be Xenomai 2.5.3)
- send us the full log of the serial console, not the part you think is
relevant (the error comes here while xnpod_schedule is trying to print a
message, the interesting part is not the failure of add_preempt_count,
but probably more the error message which xnpod_schedule wants to print).
- sens us your kernel configuration.
--
Gilles.
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