On Thu, 28 Apr 2011, Sedat Dilek wrote: > On Thu, Apr 28, 2011 at 3:30 PM, Mike Galbraith <efault@xxxxxx> 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>