From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752029Ab3LVFQc (ORCPT ); Sun, 22 Dec 2013 00:16:32 -0500 Received: from moutng.kundenserver.de ([212.227.17.10]:64959 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751200Ab3LVFQa (ORCPT ); Sun, 22 Dec 2013 00:16:30 -0500 Message-ID: <1387689387.5412.53.camel@marge.simpson.net> Subject: Re: CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo From: Mike Galbraith To: muli.baron@gmail.com Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org Date: Sun, 22 Dec 2013 06:16:27 +0100 In-Reply-To: <1387685830.5412.37.camel@marge.simpson.net> References: <1383228427.5272.36.camel@marge.simpson.net> <1383794799.5441.16.camel@marge.simpson.net> <1383798668.5441.25.camel@marge.simpson.net> <20131220154146.GA18672@breakpoint.cc> <1387617104.30230.7.camel@marge.simpson.net> <52B5CE09.5030908@gmail.com> <1387685830.5412.37.camel@marge.simpson.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Provags-ID: V02:K0:k8hP8XyVJ2yZwLKz6QrCiPKbO+rcnfylFefRGGfUE5P w8kdeXMu1waYVToUK7acrB+kTF35HextZZYvInGlBRVMH9O2rI n5VZ9YtXnUny89ETWUjzrSzoB6qiu2y8+pyHFfIt5/65OJhBPa NcPUFTa/gGh71dETT9k78qaLUsfAjIAExOz9ruR8H7zoaunL4R JFULgBTICUzlzgpUlQQuaUgsMhKLI+6lLTXuJJ4lykUQkvVoFS Y5zln86W8FbUGKAu6R9qkEhtzHwCDNrUJnwCtyX28/SvhY5LT8 pi2OAhFsMd++mtMe4c4v0OgdePbP5/EvX4IRFbdODjlWv9Rw+d +rrTEeFX8KN0QQ6UPH0I9+XBSs4L/ZL6PIy918fcA0C0K8a8dU YZ4DvnGXJkQ7w== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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