From: Pavel Machek <pavel@ucw.cz>
To: Arjan van de Ven <arjan@infradead.org>,
kernel list <linux-kernel@vger.kernel.org>
Subject: gigabit ethernet power consumption
Date: Tue, 9 Oct 2007 00:07:20 +0200 [thread overview]
Message-ID: <20071008220720.GF3484@elf.ucw.cz> (raw)
Hi!
I've found that gbit vs. 100mbit power consumption difference is about
1W -- pretty significant. (Maybe powertop should include it in the
tips section? :).
Energy Star people insist that machines should switch down to 100mbit
when network is idle, and I guess that makes a lot of sense -- you
save 1W locally and 1W on the router.
Question is, how to implement it correctly? Daemon that would watch
data rates and switch speeds using mii-tool would be simple, but is
that enough?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next reply other threads:[~2007-10-08 22:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-08 22:07 Pavel Machek [this message]
2007-10-08 22:31 ` gigabit ethernet power consumption Kok, Auke
2007-10-09 5:18 ` Willy Tarreau
2007-10-09 18:28 ` Lennart Sorensen
2007-10-09 18:41 ` Kok, Auke
2007-10-10 20:44 ` Mark Gross
2007-10-11 15:33 ` Kok, Auke
2007-10-11 11:35 ` K.Prasad
2007-10-11 15:18 ` Kok, Auke
2007-10-10 6:35 ` Oliver Neukum
2007-10-09 5:08 ` Chris Snook
2007-10-09 6:58 ` Oliver Neukum
[not found] <9c8XH-7gs-13@gated-at.bofh.it>
[not found] ` <9c9qN-7Rn-19@gated-at.bofh.it>
[not found] ` <9cs0n-3Dc-9@gated-at.bofh.it>
[not found] ` <9csjH-43E-33@gated-at.bofh.it>
[not found] ` <9d4yC-5hT-7@gated-at.bofh.it>
[not found] ` <9d7ZJ-2mI-11@gated-at.bofh.it>
2007-10-12 2:08 ` Bodo Eggert
2007-10-12 16:35 ` Kok, Auke
2007-10-12 20:30 ` Valdis.Kletnieks
2007-10-12 20:46 ` Kok, Auke
2007-10-17 13:00 ` Lennart Sorensen
2007-10-17 16:38 ` Kok, Auke
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