Re: CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo

[Mike Galbraith]

On Sat, 2013-12-21 at 19:21 +0200, Muli Baron wrote: 
> On 21/12/2013 11:11, Mike Galbraith wrote:
> >
> > Works, modulo noisy workqueues.
> >
> > rtbox:~ # sleep 35 && killall pert& cgexec -g cpuset:rtcpus taskset -c 3 pert 5
> > [1] 5660
> > 2400.05 MHZ CPU
> > perturbation threshold 0.018 usecs.
> > pert/s:       33 >15.75us:        2 min:  0.04 max: 24.14 avg:  2.51 sum/s:    84us overhead: 0.01%
> > pert/s:       35 >15.54us:        3 min:  0.04 max: 24.89 avg:  2.39 sum/s:    84us overhead: 0.01%
> > pert/s:       30 >15.27us:        2 min:  0.04 max: 23.03 avg:  2.64 sum/s:    80us overhead: 0.01%
> > pert/s:       34 >15.12us:        3 min:  0.04 max: 25.03 avg:  2.51 sum/s:    86us overhead: 0.01%
> > pert/s:       31 >14.93us:        2 min:  0.04 max: 23.86 avg:  2.60 sum/s:    83us overhead: 0.01%
> > Terminated
> >
> 
> I can confirm this works for me as well, but I have noticed some strange behavior under certain 
> conditions.

Hm, so can I.  Same everything, different day, nohz_full is NOT working.

-Mike

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