From: Con Kolivas <kernel@kolivas.org>
To: Marc Ballarin <Ballarin.Marc@gmx.de>
Cc: linux-kernel@vger.kernel.org, ck@vds.kolivas.org,
tony@atomide.com, tuukka.tikkanen@elektrobit.com
Subject: Re: [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 3
Date: Fri, 5 Aug 2005 10:31:33 +1000 [thread overview]
Message-ID: <200508051031.33949.kernel@kolivas.org> (raw)
In-Reply-To: <20050805001244.65f41b4f.Ballarin.Marc@gmx.de>
On Fri, 5 Aug 2005 08:12 am, Marc Ballarin wrote:
> On Wed, 3 Aug 2005 15:59:24 +1000
>
> Con Kolivas <kernel@kolivas.org> wrote:
> > This is the dynamic ticks patch for i386 as written by Tony Lindgen
> > <tony@atomide.com> and Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>.
> > Patch for 2.6.13-rc5
>
> One issue (tested the -rc4 Version on -mm):
> - on interrupt flood (ping -f) HZ goes down to 0-4 HZ.
> This matches "ticks to skip" below. Coincidence?
>
> - ping -f complains:
> .Warning: time of day goes back (-304us), taking countermeasures.
> ...
> .Warning: time of day goes back (-33us), taking countermeasures.
>
> Yet, system time _seems_ to be kept correctly.
Interesting... It almost seems like if you throw enough interrupts at it the
next_timer_interrupt function gets confused. I wonder if S390 and ARM are
seeing this at all since (it seems to me) they use that function?
Con
next prev parent reply other threads:[~2005-08-05 0:35 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-03 5:59 [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 3 Con Kolivas
2005-08-03 11:54 ` Jan De Luyck
2005-08-03 12:14 ` Con Kolivas
2005-08-03 14:23 ` Jan De Luyck
2005-08-04 15:03 ` Vojtech Pavlik
2005-08-05 5:12 ` Con Kolivas
2005-08-03 19:20 ` Jim MacBaine
2005-08-03 21:16 ` Con Kolivas
2005-08-03 22:22 ` Jim MacBaine
2005-08-03 22:52 ` Con Kolivas
2005-08-04 5:34 ` Jim MacBaine
2005-08-04 6:59 ` Jim MacBaine
2005-08-04 7:04 ` Con Kolivas
2005-08-04 7:12 ` Con Kolivas
2005-08-04 7:29 ` Tony Lindgren
2005-08-10 20:04 ` Bill Davidsen
2005-08-14 19:47 ` Pavel Machek
2005-08-15 1:43 ` Zwane Mwaikambo
2005-08-15 12:52 ` Con Kolivas
2005-08-15 15:39 ` Zwane Mwaikambo
2005-08-03 19:54 ` Jeffrey Hundstad
2005-08-03 20:07 ` Valdis.Kletnieks
2005-08-03 21:13 ` Con Kolivas
2005-08-03 23:22 ` Christian Leber
2005-08-04 16:25 ` Marc Ballarin
2005-08-04 5:09 ` Jan De Luyck
2005-08-04 5:07 ` Con Kolivas
2005-08-04 5:34 ` Jan De Luyck
2005-08-04 21:15 ` [PATCH] Timer Top was: " Daniel Petrini
2005-08-05 4:05 ` [PATCH] Timer Top tweaks Con Kolivas
2005-08-05 6:46 ` [ck] [PATCH] Timer Top was: i386 No-Idle-Hz aka Dynamic-Ticks 3 Jens Axboe
2005-08-05 12:39 ` Daniel Petrini
2005-08-05 13:55 ` Daniel Petrini
2005-08-04 21:44 ` [PATCH] " Adrian Bunk
2005-08-04 22:12 ` Marc Ballarin
2005-08-05 0:31 ` Con Kolivas [this message]
2005-08-05 1:30 ` Paul
2005-08-05 3:25 ` Con Kolivas
2005-08-05 12:37 ` Srivatsa Vaddagiri
2005-08-05 13:08 ` Con Kolivas
2005-08-05 16:39 ` [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 4 Con Kolivas
2005-08-06 17:47 ` Adrian Bunk
2005-08-07 5:12 ` [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 5 Con Kolivas
2005-08-07 16:58 ` Srivatsa Vaddagiri
2005-08-07 23:51 ` Con Kolivas
2005-08-08 1:20 ` Kyle Moffett
2005-08-08 1:30 ` Con Kolivas
2005-08-08 1:45 ` [ck] " Gabriel Devenyi
2005-08-08 2:44 ` Srivatsa Vaddagiri
2005-08-08 7:05 ` Nigel Cunningham
2005-08-08 7:38 ` Tony Lindgren
2005-08-08 15:06 ` Srivatsa Vaddagiri
2005-08-09 19:36 ` George Anzinger
2005-08-10 14:05 ` Srivatsa Vaddagiri
2005-08-10 22:37 ` George Anzinger
2005-08-11 21:33 ` Bill Davidsen
2005-08-12 15:13 ` George Anzinger
2005-08-08 15:08 ` Folkert van Heusden
2005-08-08 15:16 ` Daniel Petrini
2005-08-08 7:26 ` [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 3 Tony Lindgren
2005-08-08 14:54 ` Srivatsa Vaddagiri
2005-08-08 15:20 ` Tony Lindgren
2005-08-09 14:22 ` Zwane Mwaikambo
2005-08-10 7:46 ` Tony Lindgren
2005-08-09 20:05 ` George Anzinger
2005-08-09 20:22 ` Daniel Petrini
2005-08-10 8:02 ` Tony Lindgren
2005-08-10 22:40 ` George Anzinger
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