Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751826Ab0K2TGL (ORCPT ); Mon, 29 Nov 2010 14:06:11 -0500 Received: from mailout-de.gmx.net ([213.165.64.23]:40284 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1751294Ab0K2TGK (ORCPT ); Mon, 29 Nov 2010 14:06:10 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1931ZIeSml3nTCmNcxwKvqfHTvLeyJLFyXFGtxa6u dFp7x6NWfyUufT Subject: Re: [PATCH v4] sched: automated per session task groups From: Mike Galbraith To: Peter Zijlstra Cc: Linus Torvalds , Ingo Molnar , Oleg Nesterov , LKML , Paul Turner In-Reply-To: <1291052268.32004.171.camel@laptop> References: <20101121133744.GA10765@elte.hu> <1290700829.4759.16.camel@maggy.simson.net> <1290954299.30515.15.camel@marge.simson.net> <20101128201851.GA20555@elte.hu> <1291031593.32004.19.camel@laptop> <1291052268.32004.171.camel@laptop> Content-Type: text/plain Date: Mon, 29 Nov 2010 20:06:05 +0100 Message-Id: <1291057565.20709.2.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3975 Lines: 74 On Mon, 2010-11-29 at 18:37 +0100, Peter Zijlstra wrote: > On Mon, 2010-11-29 at 08:27 -0800, Linus Torvalds wrote: > > On Mon, Nov 29, 2010 at 3:53 AM, Peter Zijlstra wrote: > > > > > > Well we totally re-wrote the cgroup load-balancer in -tip. The thing > > > currently in -linus is a utter crap because its very strongly serialized > > > across all cores (some people spend like 25% of their time in there). > > > > Well, it seems that the rewrite is more crap than the "utter crap" in > > current -git. What does that make -tip? Super-utter-crap? > > > > Peter - getting the wrong answer quickly is not any better than strong > > serialization. > > I know, from the testing so far we _thought_ it was fairly sane. > Apparently there's still some work to do. Damn thing bisected to: commit 92fd4d4d67b945c0766416284d4ab236b31542c4 Merge: fe7de49 e53beac Author: Ingo Molnar Date: Thu Nov 18 13:22:14 2010 +0100 Merge commit 'v2.6.37-rc2' into sched/core Merge reason: Move to a .37-rc base. Signed-off-by: Ingo Molnar 92fd4d4d67b945c0766416284d4ab236b31542c4 is the first bad commit git bisect start # good: [f6f94e2ab1b33f0082ac22d71f66385a60d8157f] Linux 2.6.36 git bisect good f6f94e2ab1b33f0082ac22d71f66385a60d8157f # bad: [3a2b7f908d45fa45670e8ba9e7e24c0409ba43d8] Merge branch 'linus' git bisect bad 3a2b7f908d45fa45670e8ba9e7e24c0409ba43d8 # good: [520045db940a381d2bee1c1b2179f7921b40fb10] Merge branches 'upstream/xenfs' and 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen git bisect good 520045db940a381d2bee1c1b2179f7921b40fb10 # good: [520045db940a381d2bee1c1b2179f7921b40fb10] Merge branches 'upstream/xenfs' and 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen git bisect good 520045db940a381d2bee1c1b2179f7921b40fb10 # good: [120a795da07c9a02221ca23464c28a7c6ad7de1d] audit mmap git bisect good 120a795da07c9a02221ca23464c28a7c6ad7de1d # good: [19650e8580987c0ffabc2fe2cbc16b944789df8b] Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 git bisect good 19650e8580987c0ffabc2fe2cbc16b944789df8b # good: [11259d65a61b84ad954953a194c41fe84dff889a] Merge branch 'out-of-tree' git bisect good 11259d65a61b84ad954953a194c41fe84dff889a # good: [eae0932ceba16e7ee0b5690455a13ef8364845da] Merge branch 'x86/mm' git bisect good eae0932ceba16e7ee0b5690455a13ef8364845da # good: [0464a38aaca10e1a8afed003d16d25dca2168d86] Merge branch 'sched/urgent' git bisect good 0464a38aaca10e1a8afed003d16d25dca2168d86 # good: [22d1b202a8d0e1dedc35086b8f3df0a7b37d1371] Merge branch 'x86/urgent' git bisect good 22d1b202a8d0e1dedc35086b8f3df0a7b37d1371 # bad: [282810f891cf6587dfc04fc5e26ec7772330c8cb] Merge branch 'sched/core' git bisect bad 282810f891cf6587dfc04fc5e26ec7772330c8cb # bad: [2932e532dd8fbd699ce072a4badc7fbe69451be6] Merge branch 'out-of-tree' git bisect bad 2932e532dd8fbd699ce072a4badc7fbe69451be6 # bad: [d6b5591829bd348a5fbe1c428d28dea00621cdba] sched: Allow update_cfs_load() to update global load git bisect bad d6b5591829bd348a5fbe1c428d28dea00621cdba # bad: [f0d7442a5924a802b66eef79b3708f77297bfb35] sched: Fix load corruption from update_cfs_shares() git bisect bad f0d7442a5924a802b66eef79b3708f77297bfb35 # bad: [2069dd75c7d0f49355939e5586daf5a9ab216db7] sched: Rewrite tg_shares_up) git bisect bad 2069dd75c7d0f49355939e5586daf5a9ab216db7 # bad: [48c5ccae88dcd989d9de507e8510313c6cbd352b] sched: Simplify cpu-hot-unplug task migration git bisect bad 48c5ccae88dcd989d9de507e8510313c6cbd352b # bad: [92fd4d4d67b945c0766416284d4ab236b31542c4] Merge commit 'v2.6.37-rc2' into sched/core git bisect bad 92fd4d4d67b945c0766416284d4ab236b31542c4 -- 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/