From: Ingo Molnar <mingo@elte.hu>
To: Con Kolivas <kernel@kolivas.org>
Cc: tglx@linutronix.de, Mike Galbraith <efault@gmx.de>,
Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
Adrian Bunk <bunk@stusta.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.21-rc1: known regressions (v2) (part 2)
Date: Thu, 1 Mar 2007 14:30:04 +0100 [thread overview]
Message-ID: <20070301133004.GA32724@elte.hu> (raw)
In-Reply-To: <200703012305.53997.kernel@kolivas.org>
* Con Kolivas <kernel@kolivas.org> wrote:
> [...] Even though I'm finding myself defending code that has already
> been softly tagged for redundancy, let's be clear here; we're talking
> about at most a further 70ms delay in scheduling a niced task in the
> presence of a nice 0 task, which is a reasonable delay for ksoftirqd
> which we nice the eyeballs out of in mainline. Considering under load
> our scheduler has been known to cause scheduling delays of 10 seconds
> I still don't see this as a bug. Dynticks just "points it out to us".
well, not running softirqs when we could is a bug. It's not a big bug,
but it's a bug nevertheless. It doesnt matter that softirqs could be
delayed even worse under high load - there was no 'high load' here.
Ingo
next prev parent reply other threads:[~2007-03-01 13:37 UTC|newest]
Thread overview: 293+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-21 4:53 Linux 2.6.21-rc1 Linus Torvalds
2007-02-21 13:26 ` Faik Uygur
2007-02-21 18:41 ` Jiri Slaby
2007-02-21 18:51 ` Jiri Slaby
2007-02-21 19:19 ` Linus Torvalds
2007-02-21 13:32 ` Thomas Gleixner
2007-02-21 15:58 ` Kok, Auke
2007-02-21 19:24 ` Linus Torvalds
2007-02-21 19:45 ` Andrew Morton
2007-02-21 16:23 ` request_module: runaway loop modprobe net-pf-1 (is Re: Linux 2.6.21-rc1) YOSHIFUJI Hideaki / 吉藤英明
[not found] ` <87ps8372bf.fsf@duaron.myhome.or.jp>
2007-02-21 20:36 ` Greg KH
2007-02-21 21:16 ` OGAWA Hirofumi
2007-02-22 0:18 ` Greg KH
2007-02-22 9:57 ` Anders Larsen
2007-02-22 10:30 ` David Miller
[not found] ` <20070222.110440.47345562.yoshfuji@linux-ipv6.org>
[not found] ` <20070222.123417.79213825.yoshfuji@linux-ipv6.org>
2007-02-22 6:08 ` Greg KH
2007-02-21 16:24 ` Linux 2.6.21-rc1 Daniel Walker
2007-02-21 17:07 ` Thomas Gleixner
2007-02-21 17:19 ` Daniel Walker
2007-02-21 17:41 ` Thomas Gleixner
2007-02-21 17:38 ` Daniel Walker
2007-02-21 18:18 ` Thomas Gleixner
2007-02-21 18:23 ` Daniel Walker
2007-02-21 19:23 ` Thomas Gleixner
2007-02-21 19:24 ` Daniel Walker
2007-02-21 20:00 ` Daniel Walker
2007-02-21 20:18 ` Linus Torvalds
2007-02-21 20:43 ` Thomas Gleixner
2007-02-21 20:49 ` Daniel Walker
2007-02-21 21:06 ` Linus Torvalds
2007-02-21 21:21 ` Thomas Gleixner
2007-02-21 21:23 ` Daniel Walker
2007-02-21 22:05 ` Linux 2.6.21-rc1 [git bisect] Pete Harlan
2007-02-23 10:08 ` Linux 2.6.21-rc1 Andrew Morton
2007-02-23 11:35 ` Ingo Molnar
2007-02-23 11:39 ` Ingo Molnar
2007-02-23 11:47 ` Thomas Gleixner
2007-02-21 18:34 ` Andreas Schwab
2007-02-21 18:40 ` Dave Jones
2007-02-21 23:04 ` NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1] Luca Tettamanti
2007-02-21 23:17 ` Thomas Gleixner
2007-02-21 23:19 ` Luca Tettamanti
2007-02-22 12:36 ` Jan Engelhardt
2007-02-22 13:25 ` Arjan van de Ven
2007-02-22 14:10 ` Pierre Ossman
2007-02-22 14:20 ` Arjan van de Ven
2007-02-22 14:51 ` Pierre Ossman
2007-02-22 15:13 ` Pierre Ossman
2007-02-22 16:00 ` Thomas Gleixner
2007-02-22 16:27 ` Pierre Ossman
2007-02-22 16:42 ` Arjan van de Ven
2007-02-22 21:07 ` Pierre Ossman
2007-02-22 21:25 ` Andreas Mohr
2007-02-22 22:21 ` Arjan van de Ven
2007-02-23 6:55 ` Pierre Ossman
2007-02-22 19:58 ` Pallipadi, Venkatesh
2007-02-22 15:51 ` Thomas Gleixner
2007-02-22 17:26 ` NO_HZ: timer interrupt stuck David Miller
2007-02-22 17:39 ` Thomas Gleixner
2007-02-23 9:25 ` David Miller
2007-02-23 9:56 ` sparc generic time / clockevents [ was Re: NO_HZ: timer interrupt stuck ] Thomas Gleixner
2007-02-23 9:55 ` sparc generic time / clockevents David Miller
2007-02-23 19:51 ` john stultz
2007-02-23 22:15 ` Peter Keilty
2007-02-24 0:34 ` David Miller
2007-02-24 0:53 ` john stultz
2007-02-24 5:52 ` David Miller
2007-02-25 5:13 ` generic one-shot bug (was Re: sparc generic time / clockevents) David Miller
2007-02-25 8:34 ` Thomas Gleixner
2007-02-23 15:50 ` NO_HZ: timer interrupt stuck Andi Kleen
2007-02-23 15:48 ` NO_HZ: timer interrupt stuck [Re: Linux 2.6.21-rc1] Andi Kleen
2007-02-23 5:25 ` Linux 2.6.21-rc1 -- suspend Pavel Machek
2007-02-25 17:52 ` 2.6.21-rc1: known regressions (part 1) Adrian Bunk
2007-02-25 17:52 ` Adrian Bunk
2007-02-27 8:39 ` regression: forcedeth.c hang Ingo Molnar
2007-02-27 9:01 ` Ingo Molnar
2007-02-27 9:38 ` Ingo Molnar
2007-02-27 11:25 ` Ingo Molnar
2007-02-27 15:42 ` Linus Torvalds
2007-02-28 7:36 ` Ingo Molnar
2007-02-28 18:16 ` 2.6.21-rc1: known regressions (part 1) Karasyov, Konstantin A
2007-02-28 18:16 ` Karasyov, Konstantin A
2007-02-25 17:55 ` 2.6.21-rc1: known regressions (part 2) Adrian Bunk
2007-02-25 17:55 ` Adrian Bunk
2007-02-27 10:02 ` Jens Axboe
2007-02-27 10:02 ` Jens Axboe
2007-02-27 10:21 ` Pavel Machek
2007-02-27 10:21 ` Pavel Machek
2007-02-27 10:30 ` Jens Axboe
2007-02-27 10:30 ` Jens Axboe
2007-02-27 10:34 ` Ingo Molnar
2007-02-27 10:34 ` Ingo Molnar
2007-02-27 10:59 ` Jens Axboe
2007-02-27 10:59 ` Jens Axboe
2007-02-27 11:15 ` Jens Axboe
2007-02-27 11:15 ` Jens Axboe
2007-02-27 13:09 ` Jens Axboe
2007-02-27 13:09 ` Jens Axboe
2007-03-01 9:34 ` Ingo Molnar
2007-03-01 9:34 ` Ingo Molnar
2007-03-01 10:41 ` Ingo Molnar
2007-03-01 10:41 ` Ingo Molnar
2007-03-01 14:52 ` Ingo Molnar
2007-03-01 16:12 ` Rafael J. Wysocki
2007-03-01 16:12 ` Rafael J. Wysocki
2007-03-02 0:26 ` Linus Torvalds
2007-03-02 0:26 ` Linus Torvalds
2007-03-02 0:41 ` Linus Torvalds
2007-03-02 0:41 ` Linus Torvalds
2007-03-02 7:14 ` Ingo Molnar
2007-03-02 7:14 ` Ingo Molnar
2007-03-02 7:21 ` Ingo Molnar
2007-03-02 7:21 ` Ingo Molnar
2007-03-02 8:04 ` Ingo Molnar
2007-03-02 8:04 ` Ingo Molnar
2007-03-02 10:20 ` Ingo Molnar
2007-03-02 10:20 ` Ingo Molnar
2007-03-02 10:22 ` [patch] KVM: T60 resume fix Ingo Molnar
2007-03-02 10:22 ` Ingo Molnar
2007-03-02 11:39 ` Michael S. Tsirkin
2007-03-03 8:22 ` Avi Kivity
2007-03-03 8:22 ` Avi Kivity
2007-03-03 8:21 ` Avi Kivity
2007-03-03 8:21 ` Avi Kivity
2007-03-03 11:57 ` Andrew Morton
2007-03-03 11:57 ` Andrew Morton
2007-03-03 12:07 ` Junio C Hamano
2007-03-03 12:07 ` Junio C Hamano
2007-03-05 8:22 ` Ingo Molnar
2007-03-05 8:22 ` Ingo Molnar
2007-03-05 8:50 ` Avi Kivity
2007-03-05 8:50 ` Avi Kivity
2007-03-05 8:44 ` Ingo Molnar
2007-03-05 8:44 ` Ingo Molnar
2007-03-05 8:57 ` Ingo Molnar
2007-03-05 8:57 ` Ingo Molnar
2007-03-05 9:27 ` Avi Kivity
2007-03-05 9:27 ` Avi Kivity
2007-03-05 10:05 ` Ingo Molnar
2007-03-05 10:05 ` Ingo Molnar
2007-03-05 10:33 ` Avi Kivity
2007-03-05 10:33 ` Ingo Molnar
2007-03-05 10:40 ` Michael S. Tsirkin
2007-03-05 10:40 ` Michael S. Tsirkin
2007-03-05 12:54 ` Michael S. Tsirkin
2007-03-05 12:54 ` Michael S. Tsirkin
2007-03-05 12:50 ` Ingo Molnar
2007-03-05 12:50 ` Ingo Molnar
2007-03-05 13:26 ` Michael S. Tsirkin
2007-03-05 13:26 ` Michael S. Tsirkin
2007-03-05 13:32 ` Ingo Molnar
2007-03-05 13:32 ` Ingo Molnar
2007-03-05 10:23 ` Michael S. Tsirkin
2007-03-05 10:23 ` Michael S. Tsirkin
2007-03-05 10:29 ` Ingo Molnar
2007-03-02 16:36 ` 2.6.21-rc1: known regressions (part 2) Linus Torvalds
2007-03-05 14:04 ` Ingo Molnar
2007-03-05 15:44 ` Michael S. Tsirkin
2007-03-05 15:44 ` Michael S. Tsirkin
2007-03-05 16:14 ` Michael S. Tsirkin
2007-03-05 16:14 ` Michael S. Tsirkin
2007-03-05 16:41 ` Ingo Molnar
2007-03-05 16:41 ` Ingo Molnar
2007-03-05 18:16 ` Jens Axboe
2007-03-01 23:36 ` Linus Torvalds
2007-03-01 23:36 ` Linus Torvalds
2007-03-02 10:07 ` Pavel Machek
2007-03-02 10:07 ` Pavel Machek
2007-03-05 8:42 ` Michael S. Tsirkin
2007-03-05 8:42 ` Michael S. Tsirkin
2007-03-05 10:11 ` SATA resume slowness, e1000 MSI warning Ingo Molnar
2007-03-05 10:11 ` Ingo Molnar
2007-03-06 5:30 ` Jeff Garzik
2007-03-06 5:30 ` Jeff Garzik
2007-03-06 6:35 ` Kok, Auke
2007-03-06 6:35 ` Kok, Auke
2007-03-06 9:04 ` Ingo Molnar
2007-03-06 9:04 ` Ingo Molnar
2007-03-06 15:34 ` Kok, Auke
2007-03-07 4:15 ` Eric W. Biederman
2007-03-07 4:15 ` Eric W. Biederman
2007-03-07 16:31 ` Kok, Auke
2007-03-07 16:31 ` Kok, Auke
2007-03-07 16:45 ` Kok, Auke
2007-03-07 16:45 ` Kok, Auke
2007-03-07 19:28 ` Eric W. Biederman
2007-03-07 19:28 ` Eric W. Biederman
2007-03-08 2:53 ` Andrew Morton
2007-03-08 2:53 ` Andrew Morton
2007-03-08 6:58 ` Eric W. Biederman
2007-03-08 9:55 ` Jeff Garzik
2007-03-08 9:55 ` Jeff Garzik
2007-03-08 17:27 ` Eric W. Biederman
2007-03-08 17:27 ` Eric W. Biederman
2007-03-08 19:58 ` [PATCH 0/2] Repair pci_restore_state when used with device resets Eric W. Biederman
2007-03-08 19:58 ` Eric W. Biederman
2007-03-08 20:04 ` [PATCH 1/2] msi: Safer state caching Eric W. Biederman
2007-03-08 20:04 ` Eric W. Biederman
2007-03-08 20:06 ` [PATCH 2/2] pci: Repair pci_save/restore_state so we can restore one save many times Eric W. Biederman
2007-03-08 20:06 ` Eric W. Biederman
2007-03-10 7:50 ` patch pci-repair-pci_save-restore_state-so-we-can-restore-one-save-many-times.patch added to gregkh-2.6 tree gregkh
2007-03-12 22:46 ` [PATCH 2/2] pci: Repair pci_save/restore_state so we can restore one save many times Kok, Auke
2007-03-12 22:46 ` Kok, Auke
2007-03-10 7:49 ` patch msi-safer-state-caching.patch added to gregkh-2.6 tree gregkh
2007-03-08 20:08 ` [PATCH 0/2] Repair pci_restore_state when used with device resets Ingo Molnar
2007-03-08 20:08 ` Ingo Molnar
2007-03-08 20:26 ` Eric W. Biederman
2007-03-08 20:26 ` Eric W. Biederman
2007-03-08 10:23 ` SATA resume slowness, e1000 MSI warning Michael S. Tsirkin
2007-03-08 10:23 ` Michael S. Tsirkin
2007-03-11 11:11 ` Eric W. Biederman
2007-03-11 11:11 ` Eric W. Biederman
2007-03-11 11:24 ` Michael S. Tsirkin
2007-03-11 11:24 ` Michael S. Tsirkin
2007-03-11 17:37 ` Eric W. Biederman
2007-03-11 17:37 ` Eric W. Biederman
2007-03-11 18:03 ` Michael S. Tsirkin
2007-03-11 18:03 ` Michael S. Tsirkin
2007-03-11 18:27 ` Eric W. Biederman
2007-03-11 18:27 ` Eric W. Biederman
2007-03-11 18:37 ` Michael S. Tsirkin
2007-03-11 18:37 ` Michael S. Tsirkin
2007-03-11 19:50 ` Eric W. Biederman
2007-03-11 19:50 ` Eric W. Biederman
2007-03-12 4:35 ` Michael S. Tsirkin
2007-03-12 4:35 ` Michael S. Tsirkin
2007-04-16 19:56 ` Michael S. Tsirkin
2007-03-09 23:06 ` Kok, Auke
2007-03-09 23:06 ` Kok, Auke
2007-03-10 3:41 ` Eric W. Biederman
2007-03-10 3:41 ` Eric W. Biederman
2007-03-06 9:06 ` Ingo Molnar
2007-03-06 9:06 ` Ingo Molnar
2007-03-06 16:26 ` Thomas Gleixner
2007-03-06 16:26 ` Thomas Gleixner
2007-03-06 16:52 ` Linus Torvalds
2007-03-06 16:52 ` Linus Torvalds
2007-03-06 17:09 ` Kok, Auke
2007-03-06 17:09 ` Kok, Auke
2007-03-09 6:44 ` [linux-pm] 2.6.21-rc1: known regressions (part 2) Pavel Machek
2007-03-09 6:44 ` Pavel Machek
2007-03-05 15:34 ` Michael S. Tsirkin
2007-03-05 15:34 ` Michael S. Tsirkin
2007-02-27 22:09 ` Adrian Bunk
2007-02-27 22:09 ` Adrian Bunk
2007-02-28 7:41 ` Jens Axboe
2007-02-28 7:41 ` Jens Axboe
2007-02-25 18:02 ` 2.6.21-rc1: known regressions (part 3) Adrian Bunk
2007-02-25 20:59 ` Greg KH
2007-02-26 22:01 ` 2.6.21-rc1: known regressions (v2) (part 1) Adrian Bunk
2007-02-26 22:01 ` Adrian Bunk
2007-02-27 4:09 ` Sergio Monteiro Basto
2007-02-27 12:50 ` S.Çağlar Onur
2007-02-27 13:25 ` Ismail Dönmez
[not found] ` <b637ec0b0702270614i25b6be9fmfb4b12ddd789a467@mail.gmail.com>
2007-02-27 18:44 ` S.Çağlar Onur
2007-02-27 19:08 ` S.Çağlar Onur
2007-02-27 13:00 ` Meelis Roos
2007-02-27 14:16 ` Alan
2007-02-28 21:13 ` Michael S. Tsirkin
2007-02-28 21:27 ` Thomas Gleixner
2007-02-28 21:40 ` Michael S. Tsirkin
2007-02-28 21:40 ` Michael S. Tsirkin
2007-03-01 3:45 ` Jeff Chua
2007-03-01 3:45 ` Jeff Chua
2007-03-02 12:26 ` [linux-pm] " Pavel Machek
2007-03-03 11:17 ` Jens Axboe
2007-03-05 0:04 ` Adrian Bunk
2007-03-06 1:32 ` Jeff Chua
2007-03-06 12:03 ` Jeff Chua
2007-03-06 12:08 ` Michael S. Tsirkin
2007-03-06 12:08 ` Michael S. Tsirkin
2007-03-06 12:12 ` Jeff Chua
2007-03-19 15:32 ` Pavel Machek
2007-03-19 21:23 ` Rafael J. Wysocki
2007-02-26 22:05 ` 2.6.21-rc1: known regressions (v2) (part 2) Adrian Bunk
2007-02-27 8:21 ` Thomas Gleixner
2007-02-27 8:33 ` Michal Piotrowski
2007-02-27 8:33 ` Ingo Molnar
2007-02-27 8:54 ` Mike Galbraith
2007-02-27 23:07 ` Con Kolivas
2007-02-28 4:21 ` Mike Galbraith
2007-02-28 22:01 ` Con Kolivas
2007-03-01 0:02 ` Mike Galbraith
2007-03-01 8:46 ` Ingo Molnar
2007-03-01 11:13 ` Con Kolivas
2007-03-01 11:33 ` Thomas Gleixner
2007-03-01 12:05 ` Con Kolivas
2007-03-01 12:20 ` Thomas Gleixner
2007-03-01 13:30 ` Ingo Molnar [this message]
2007-03-01 21:51 ` Con Kolivas
2007-03-01 22:33 ` [PATCH] sched: remove SMT nice Con Kolivas
[not found] ` <20070301173002.456f9534.akpm@linux-foundation.org>
2007-03-02 1:25 ` Con Kolivas
2007-02-27 8:35 ` 2.6.21-rc1: known regressions (v2) (part 2) Michal Piotrowski
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