gigabit ethernet power consumption

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To: Arjan van de Ven <arjan@...>, kernel list <linux-kernel@...>
Date: Monday, October 8, 2007 - 6:07 pm

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
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Messages in current thread:
gigabit ethernet power consumption, Pavel Machek, (Mon Oct 8, 6:07 pm)
Re: gigabit ethernet power consumption, Oliver Neukum, (Tue Oct 9, 2:58 am)
Re: gigabit ethernet power consumption, Chris Snook, (Tue Oct 9, 1:08 am)
Re: gigabit ethernet power consumption, Kok, Auke, (Mon Oct 8, 6:31 pm)
Re: gigabit ethernet power consumption, Lennart Sorensen, (Tue Oct 9, 2:28 pm)
Re: gigabit ethernet power consumption, Oliver Neukum, (Wed Oct 10, 2:35 am)
Re: gigabit ethernet power consumption, Kok, Auke, (Tue Oct 9, 2:41 pm)
Re: gigabit ethernet power consumption, K.Prasad, (Thu Oct 11, 7:35 am)
Re: gigabit ethernet power consumption, Kok, Auke, (Thu Oct 11, 11:18 am)
Re: gigabit ethernet power consumption, Mark Gross, (Wed Oct 10, 4:44 pm)
Re: gigabit ethernet power consumption, Kok, Auke, (Thu Oct 11, 11:33 am)
Re: gigabit ethernet power consumption, Willy Tarreau, (Tue Oct 9, 1:18 am)