From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Galbraith Subject: Re: CONFIG_NO_HZ_FULL + CONFIG_PREEMPT_RT_FULL = nogo Date: Sun, 22 Dec 2013 05:17:10 +0100 Message-ID: <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> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org To: muli.baron@gmail.com Return-path: Received: from moutng.kundenserver.de ([212.227.126.187]:61711 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751035Ab3LVERO (ORCPT ); Sat, 21 Dec 2013 23:17:14 -0500 In-Reply-To: <52B5CE09.5030908@gmail.com> Sender: linux-rt-users-owner@vger.kernel.org List-ID: 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