From: Mike Galbraith <efault@gmx.de>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>, Oleg Nesterov <oleg@redhat.com>,
LKML <linux-kernel@vger.kernel.org>, Paul Turner <pjt@google.com>
Subject: Re: [PATCH v4] sched: automated per session task groups
Date: Mon, 29 Nov 2010 20:06:05 +0100 [thread overview]
Message-ID: <1291057565.20709.2.camel@marge.simson.net> (raw)
In-Reply-To: <1291052268.32004.171.camel@laptop>
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 <a.p.zijlstra@chello.nl> 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 <mingo@elte.hu>
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 <mingo@elte.hu>
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
next prev parent reply other threads:[~2010-11-29 19:06 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-21 13:37 [PATCH v4] sched: automated per session task groups Ingo Molnar
2010-11-21 13:39 ` Ingo Molnar
2010-11-21 15:44 ` Oleg Nesterov
2010-11-21 16:35 ` Mike Galbraith
2010-11-21 16:15 ` Mike Galbraith
2010-11-21 18:43 ` Gene Heskett
2010-11-25 16:00 ` Mike Galbraith
2010-11-28 14:24 ` Mike Galbraith
2010-11-28 19:31 ` Linus Torvalds
2010-11-28 20:18 ` Ingo Molnar
2010-11-29 11:53 ` Peter Zijlstra
2010-11-29 12:30 ` Ingo Molnar
2010-11-29 13:45 ` Mike Galbraith
2010-11-29 13:47 ` Ingo Molnar
2010-11-29 14:04 ` Mike Galbraith
2010-11-29 16:27 ` Linus Torvalds
2010-11-29 16:44 ` Ingo Molnar
2010-11-29 17:37 ` Peter Zijlstra
2010-11-29 18:03 ` Ingo Molnar
2010-11-29 19:06 ` Mike Galbraith [this message]
2010-11-29 19:20 ` Ingo Molnar
2010-11-30 3:39 ` Paul Turner
2010-11-30 4:14 ` Mike Galbraith
2010-11-30 4:23 ` Paul Turner
2010-11-30 13:18 ` Mike Galbraith
2010-11-30 13:48 ` Peter Zijlstra
2010-11-30 13:59 ` Ingo Molnar
2010-11-30 14:13 ` Ingo Molnar
2010-11-30 16:41 ` Mike Galbraith
2010-11-30 15:17 ` Vivek Goyal
2010-11-30 17:13 ` Mike Galbraith
2010-11-30 19:36 ` Vivek Goyal
2010-12-01 5:01 ` Américo Wang
2010-12-01 6:09 ` Mike Galbraith
2010-12-01 11:36 ` Peter Zijlstra
2010-12-01 22:12 ` Valdis.Kletnieks
2010-12-01 5:57 ` Mike Galbraith
2010-12-01 11:33 ` Peter Zijlstra
2010-12-01 11:55 ` Mike Galbraith
2010-12-01 14:55 ` Vivek Goyal
2010-12-01 15:04 ` Mike Galbraith
2010-11-30 7:54 ` Mike Galbraith
2010-11-30 14:18 ` Ingo Molnar
2010-11-30 14:53 ` Ingo Molnar
2010-11-30 15:01 ` Peter Zijlstra
2010-11-30 15:11 ` Ingo Molnar
2010-11-30 16:28 ` Mike Galbraith
2010-11-29 5:45 ` Mike Galbraith
2010-12-01 3:39 ` Paul Turner
2010-12-01 3:39 ` Paul Turner
2010-12-01 6:16 ` Mike Galbraith
2010-12-03 5:11 ` Paul Turner
2010-12-03 6:48 ` Mike Galbraith
2010-12-03 8:37 ` Paul Turner
2010-12-04 23:55 ` James Courtier-Dutton
2010-12-05 5:11 ` Paul Turner
2010-12-07 11:32 ` Paul Turner
2010-12-15 12:10 ` Paul Turner
2010-12-01 11:34 ` Peter Zijlstra
-- strict thread matches above, loose matches on Subject: below --
2010-11-15 1:13 [RFC/RFT PATCH v3] sched: automated per tty " Mike Galbraith
2010-11-15 8:57 ` Peter Zijlstra
2010-11-15 11:32 ` Mike Galbraith
2010-11-15 11:46 ` Mike Galbraith
2010-11-15 12:57 ` Oleg Nesterov
2010-11-15 21:25 ` Mike Galbraith
2010-11-16 13:04 ` Oleg Nesterov
2010-11-16 14:18 ` Mike Galbraith
2010-11-16 15:03 ` Oleg Nesterov
2010-11-16 15:41 ` Mike Galbraith
2010-11-16 17:28 ` Ingo Molnar
2010-11-20 19:35 ` [PATCH v4] sched: automated per session " Mike Galbraith
2010-12-04 17:39 ` Colin Walters
2010-12-04 18:33 ` Linus Torvalds
2010-12-04 20:01 ` Colin Walters
2010-12-04 22:39 ` Linus Torvalds
2010-12-04 23:43 ` Colin Walters
2010-12-05 0:31 ` Linus Torvalds
2010-12-05 7:47 ` Ray Lee
2010-12-05 19:22 ` Colin Walters
2010-12-05 20:47 ` Linus Torvalds
2010-12-05 22:47 ` Colin Walters
2010-12-05 22:58 ` Jesper Juhl
2010-12-05 23:05 ` Jesper Juhl
2010-12-07 18:51 ` Peter Zijlstra
2010-12-05 10:18 ` Con Kolivas
2010-12-05 11:36 ` Mike Galbraith
2010-12-05 20:58 ` Ingo Molnar
2010-12-04 23:31 ` david
2010-12-05 11:11 ` Nikos Chantziaras
2010-12-06 0:28 ` Valdis.Kletnieks
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