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From: Mike Galbraith <bitbucket@online.de>
To: muli.baron@gmail.com
Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org
Subject: Re: CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo
Date: Sun, 22 Dec 2013 06:16:27 +0100	[thread overview]
Message-ID: <1387689387.5412.53.camel@marge.simpson.net> (raw)
In-Reply-To: <1387685830.5412.37.camel@marge.simpson.net>

On Sun, 2013-12-22 at 05:17 +0100, Mike Galbraith wrote: 
> 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.

But while I was off futzing with DL980, it started working all by
itself, after not working _at all_ for three reboot/play attempts.  

There's a phase-of-moon bug lurking in there somewhere.

-Mike



  parent reply	other threads:[~2013-12-22  5:16 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-31 14:07 CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo Mike Galbraith
2013-11-06 17:49 ` Thomas Gleixner
2013-11-07  3:26   ` Mike Galbraith
2013-11-07  4:31     ` Mike Galbraith
2013-11-07 11:21       ` Thomas Gleixner
2013-11-07 12:59         ` Frederic Weisbecker
2013-11-07 13:13           ` Thomas Gleixner
2013-11-12  8:06             ` Mike Galbraith
2013-11-12  9:28               ` Thomas Gleixner
2013-11-15 16:30                 ` [PATCH] rtmutex: take the waiter lock with irqs off Sebastian Andrzej Siewior
2013-11-15 20:14                   ` [PATCH v2] " Sebastian Andrzej Siewior
2013-11-18 14:10                     ` Peter Zijlstra
2013-11-18 17:56                       ` Peter Zijlstra
2013-11-18 23:59                       ` Frederic Weisbecker
2013-11-19  8:30                         ` Peter Zijlstra
2013-11-22 13:59                       ` Sebastian Andrzej Siewior
2013-11-22 16:08                         ` Peter Zijlstra
2013-11-22 16:21                           ` Sebastian Andrzej Siewior
2013-11-22 17:44                             ` Sebastian Andrzej Siewior
2013-11-25 18:33                           ` Paul Gortmaker
2013-11-07 13:07         ` CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo Mike Galbraith
2013-12-20 15:41         ` Sebastian Andrzej Siewior
2013-12-21  9:11           ` Mike Galbraith
2013-12-21 17:21             ` Muli Baron
2013-12-22  4:17               ` Mike Galbraith
2013-12-22  5:10                 ` Mike Galbraith
2013-12-22  5:37                   ` Mike Galbraith
2013-12-22  5:16                 ` Mike Galbraith [this message]
2013-11-08  3:23       ` Paul E. McKenney
2013-11-08  7:31         ` Mike Galbraith
2013-11-08 12:37           ` Paul E. McKenney
2013-11-08 13:26             ` Mike Galbraith
2013-11-08 14:03               ` Paul E. McKenney
2013-11-08 14:21                 ` Mike Galbraith
2013-11-08 14:29                 ` Frederic Weisbecker
2013-11-08 14:45                   ` Paul E. McKenney
2013-11-08 16:03                     ` Frederic Weisbecker
2013-11-08 14:53                   ` Mike Galbraith
2013-11-08 16:04                     ` Frederic Weisbecker

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