On Thu, Apr 28, 2011 at 8:49 PM, Thomas Gleixner <tglx@linutronix.de> wrote:
> On Thu, 28 Apr 2011, Sedat Dilek wrote:
>> On Thu, Apr 28, 2011 at 3:30 PM, Mike Galbraith <efault@gmx.de> wrote:
>> rt_rq[0]:
>>   .rt_nr_running                 : 0
>>   .rt_throttled                  : 0
>
>>   .rt_time                       : 888.893877
>
>>   .rt_time                       : 950.005460
>
> So rt_time is constantly accumulated, but never decreased. The
> decrease happens in the timer callback. Looks like the timer is not
> running for whatever reason.
>
> Can you add the following patch as well ?
>
> Thanks,
>
>        tglx
>
> --- linux-2.6.orig/kernel/sched.c
> +++ linux-2.6/kernel/sched.c
> @@ -172,7 +172,7 @@ static enum hrtimer_restart sched_rt_per
>                idle = do_sched_rt_period_timer(rt_b, overrun);
>        }
>
> -       return idle ? HRTIMER_NORESTART : HRTIMER_RESTART;
> +       return HRTIMER_RESTART;
>  }
>
>  static
>

See tarball.

- Sedat -