From: "H. Peter Anvin" <hpa@zytor.com>
To: Oliver Neukum <oliver@neukum.org>
Cc: Pavel Machek <pavel@ucw.cz>,
kernel list <linux-kernel@vger.kernel.org>,
Linux-pm mailing list <linux-pm@lists.osdl.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [RFC] sleepy linux
Date: Wed, 26 Dec 2007 12:43:56 -0800 [thread overview]
Message-ID: <4772BD0C.3040609@zytor.com> (raw)
In-Reply-To: <200712262108.35643.oliver@neukum.org>
Oliver Neukum wrote:
> Am Mittwoch, 26. Dezember 2007 19:56:59 schrieb H. Peter Anvin:
>>> 3) Network card that is either down
>>> or can wake up system on any packet (and not loose too many packets)
>>>
>> This is the big crux I see. You're going to constantly wake up the
>> machine due to broadcast packets, and spend a lot of power just going in
>> and out of S3.
>
> How many machines care a lot about saving power while they are connected
> to an ethernet? Wlan might be more of a problem.
A lot of them should. An inordinate amount of machines sit there
burning power for no reason. You can argue that S3 isn't needed -- that
nohz + C3/C4 + turning off the screen would be enough, and that might be
legit. Heck, I'm constantly frustrated by every distro upgrade breaking
power management for my monitor.
-hpa
next prev parent reply other threads:[~2007-12-26 20:43 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-25 23:07 [RFC] sleepy linux Pavel Machek
2007-12-26 17:28 ` Oliver Neukum
2007-12-26 17:28 ` Oliver Neukum
2007-12-26 19:02 ` Pavel Machek
2007-12-26 19:02 ` Pavel Machek
2007-12-26 20:17 ` Pavel Machek
2007-12-26 20:17 ` Pavel Machek
2007-12-26 20:23 ` Oliver Neukum
2007-12-26 20:23 ` Oliver Neukum
2007-12-26 20:32 ` Pavel Machek
2007-12-26 20:32 ` Pavel Machek
2007-12-26 23:15 ` Oliver Neukum
2007-12-29 23:48 ` Pavel Machek
2007-12-27 9:41 ` Oliver Neukum
2007-12-29 23:51 ` Pavel Machek
2007-12-30 16:39 ` Oliver Neukum
2007-12-31 14:44 ` Pavel Machek
2008-01-02 10:52 ` Oliver Neukum
2007-12-26 18:56 ` H. Peter Anvin
2007-12-26 19:00 ` Pavel Machek
2007-12-26 19:22 ` H. Peter Anvin
2007-12-26 20:08 ` Oliver Neukum
2007-12-26 20:08 ` Oliver Neukum
2007-12-26 20:43 ` H. Peter Anvin [this message]
2007-12-26 20:51 ` Pavel Machek
2007-12-26 20:54 ` H. Peter Anvin
2007-12-29 23:44 ` Pavel Machek
2007-12-26 20:09 ` [linux-pm] " Igor Stoppa
2007-12-30 11:15 ` Ingo Molnar
2008-01-05 21:51 ` Pavel Machek
2008-01-08 16:37 ` Ingo Molnar
2008-01-08 19:15 ` Pavel Machek
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