From: Dave Jones <davej@redhat.com>
To: Con Kolivas <kernel@kolivas.org>
Cc: ck list <ck@vds.kolivas.org>,
linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.15-ck1
Date: Wed, 4 Jan 2006 14:05:54 -0500 [thread overview]
Message-ID: <20060104190554.GG10592@redhat.com> (raw)
In-Reply-To: <200601041200.03593.kernel@kolivas.org>
On Wed, Jan 04, 2006 at 12:00:00PM +1100, Con Kolivas wrote:
> +2.6.15-dynticks-060101.patch
> +dynticks-disable_smp_config.patch
> Latest version of the dynticks patch. This is proving stable and effective on
> virtually all uniprocessor machines and will benefit systems that desire
> power savings. SMP kernels (even on UP machines) still misbehave so this
> config option is not available by default for this stable kernel.
I've been curious for some time if this would actually show any measurable
power savings. So I hooked up my laptop to a gizmo[1] that shows how much
power is being sucked.
both before, and after, it shows my laptop when idle is pulling 21W.
So either the savings here are <1W (My device can't measure more accurately
than a single watt), or this isn't actually buying us anything at all, or
something needs tuning.
Dave
[1] http://www.thinkgeek.com/gadgets/electronic/7657/
next prev parent reply other threads:[~2006-01-04 19:06 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-04 1:00 2.6.15-ck1 Con Kolivas
2006-01-04 19:05 ` Dave Jones [this message]
2006-01-04 19:57 ` 2.6.15-ck1 Dave Jones
2006-01-04 20:33 ` 2.6.15-ck1 Arjan van de Ven
2006-01-04 21:22 ` 2.6.15-ck1 Dave Jones
2006-01-04 21:40 ` [ck] 2.6.15-ck1 Radoslaw Szkodzinski
2006-01-05 0:12 ` 2.6.15-ck1 Con Kolivas
2006-01-05 0:27 ` 2.6.15-ck1 Dave Jones
2006-01-05 0:49 ` 2.6.15-ck1 Con Kolivas
2006-01-05 1:14 ` 2.6.15-ck1 Dave Jones
2006-01-05 1:22 ` 2.6.15-ck1 Andi Kleen
2006-01-05 1:36 ` 2.6.15-ck1 Con Kolivas
2006-01-05 6:04 ` 2.6.15-ck1 Dave Jones
2006-01-05 6:42 ` 2.6.15-ck1 Vojtech Pavlik
2006-01-05 6:55 ` [ck] 2.6.15-ck1 Con Kolivas
2006-01-05 15:19 ` 2.6.15-ck1 Andi Kleen
2006-01-05 16:30 ` 2.6.15-ck1 Vojtech Pavlik
2006-01-05 16:39 ` 2.6.15-ck1 Andi Kleen
2006-01-05 17:13 ` 2.6.15-ck1 Dmitry Torokhov
2006-01-05 17:28 ` 2.6.15-ck1 Andi Kleen
2006-01-05 1:50 ` 2.6.15-ck1 Tony Lindgren
2006-01-04 23:10 ` 2.6.15-ck1 Con Kolivas
2006-01-05 1:57 ` 2.6.15-ck1 Tony Lindgren
2006-01-05 18:47 ` [ck] 2.6.15-ck1 Kevin Radloff
2006-01-12 18:51 ` Daniel Petrini
2006-01-04 20:38 ` 2.6.15-ck1 Grant Coady
2006-01-04 20:56 ` 2.6.15-ck1 Dave Jones
2006-01-12 22:11 ` 2.6.15-ck1 Adam Belay
2006-01-12 23:03 ` 2.6.15-ck1 Dave Jones
2006-01-13 0:42 ` 2.6.15-ck1 Adam Belay
2006-01-13 0:46 ` 2.6.15-ck1 Dave Jones
2006-01-16 20:28 ` 2.6.15-ck1 Ben Slusky
2006-01-14 3:42 ` 2.6.15-ck1 Philipp Rumpf
2006-01-14 4:41 ` 2.6.15-ck1 Dave Jones
2006-01-14 13:06 ` [ck] 2.6.15-ck1 Jens Axboe
2006-01-05 17:58 ` 2.6.15-ck1 Tomasz Torcz
2006-01-05 23:22 ` 2.6.15-ck1 Con Kolivas
2006-01-07 13:16 ` 2.6.15-ck1 Tomasz Torcz
[not found] ` <9268368b0601131119n639c345cgcf2a5dadd7cb423c@mail.gmail.com>
2006-01-14 20:54 ` 2.6.15-ck1 Tomasz Torcz
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