From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>, Mike Galbraith <efault@gmx.de>,
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 18:37:48 +0100 [thread overview]
Message-ID: <1291052268.32004.171.camel@laptop> (raw)
In-Reply-To: <AANLkTimQ2Kp2=um9ip7J2=-joskmz4P-0b_SrexFbTh0@mail.gmail.com>
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.
next prev parent reply other threads:[~2010-11-29 17:38 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 [this message]
2010-11-29 18:03 ` Ingo Molnar
2010-11-29 19:06 ` Mike Galbraith
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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