Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752980AbZAaFiT (ORCPT ); Sat, 31 Jan 2009 00:38:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751016AbZAaFiL (ORCPT ); Sat, 31 Jan 2009 00:38:11 -0500 Received: from mail.gmx.net ([213.165.64.20]:44702 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750853AbZAaFiJ (ORCPT ); Sat, 31 Jan 2009 00:38:09 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1/HTGsU6nHHMA9i9oHAP6NGi6mkanBSv5x93SiiHS nmcfdF4JeABbcL Subject: Re: scheduler nice 19 versus 'idle' behavior / static low-priority scheduling From: Mike Galbraith To: Brian Rogers Cc: Nathanael Hoyle , Jan Engelhardt , Linux Kernel Mailing List , Ingo Molnar , Peter Zijlstra , stable In-Reply-To: <49837B32.3010206@xyzw.org> References: <1233294584.28741.2.camel@localhost> <1233297635.17301.11.camel@localhost> <1233302349.17301.27.camel@localhost> <1233302861.6061.14.camel@marge.simson.net> <49837B32.3010206@xyzw.org> Content-Type: text/plain Date: Sat, 31 Jan 2009 06:38:04 +0100 Message-Id: <1233380284.5636.5.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.22.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.59 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1303 Lines: 33 On Fri, 2009-01-30 at 14:12 -0800, Brian Rogers wrote: > Mike Galbraith wrote: > > On Fri, 2009-01-30 at 02:59 -0500, Nathanael Hoyle wrote: > > > >> I am running foldingathome under it at the moment, and it seems to be > >> improving the situation somewhat, but I still need/want to test with > >> Mike's referenced patches. > >> > > You will most definitely encounter evilness running SCHED_IDLE tasks in > > a kernel without the SCHED_IDLE fixes. > > > Speaking of SCHED_IDLE fixes, is > 6bc912b71b6f33b041cfde93ca3f019cbaa852bc going to be put into the next > stable 2.6.28 release? Without it on 2.6.28.2, I can still produce > minutes-long freezes with BOINC or other idle processes. > > With the above commit on top of 2.6.28.2 and also > cce7ade803699463ecc62a065ca522004f7ccb3d, the problem is solved, though > I assume cce7ad isn't actually required to fix that, and I can test that > if desired. I think they both should go to stable, but dunno if they're headed that direction or not. One way to find out, CCs added. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/