From: Marc Ballarin <Ballarin.Marc@gmx.de>
To: Christian Leber <christian@leber.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i386 No-Idle-Hz aka Dynamic-Ticks 3
Date: Thu, 4 Aug 2005 18:25:13 +0200 [thread overview]
Message-ID: <20050804182513.769e1887.Ballarin.Marc@gmx.de> (raw)
In-Reply-To: <20050803232236.GA13520@core.home>
On Thu, 4 Aug 2005 01:22:36 +0200
Christian Leber <christian@leber.de> wrote:
> Just a few numbers:
>
> I tried it on a Laptop (Dell C810, P3m 1133 mhz) and measured the power
> usage with an external device and it stayed with or without patch at
> 27W. (HZ was at about 28)
Does your machine enter C3 state? Check the usage
in /proc/acpi/processor/CPU0/power
If usage is 0, unplug all USB peripherals (at least those connected to
uhci controllers). Also shut down sound servers.
Without C3, there won't be any power savings from lower HZ. Desktop CPUs
often don't support C3 at all.
Marc
next prev parent reply other threads:[~2005-08-04 16:26 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-03 5:59 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 [this message]
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
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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