Re: hrtimer: interrupt took 10252 ns - meaning?

[Jens Koehler <jenskxxx@googlemail.com>]

Thank you for explanation.

In the application running two real time threads. First one runs with
a sleep time of 2 ms and the second one with 100ms. In difference to
Hello World example from
https://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO the calculation
of sleep time starts always with clock_gettime. Could this cause the
problem?

while(1)
{
   //do the stuff

   clock_gettime(CLOCK_MONOTONIC, &tsleep);
   tsleep.tv_nsec += TimerThreadPeriod_ns;
   while (tsleep.tv_nsec >= NSEC_PER_SEC)
   {
      tsleep.tv_nsec -= NSEC_PER_SEC;
      tsleep.tv_sec++;
   }
   clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &tsleep, NULL);
}

How can we find the min delta for our CPU?

Jens