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Date:      Tue, 18 Mar 2008 13:54:55 +0000
From:      "Poul-Henning Kamp" <phk@phk.freebsd.dk>
To:        John Baldwin <jhb@freebsd.org>
Cc:        "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, freebsd-arch@freebsd.org
Subject:   Re: Power-Mgt (Was: Re: cvs commit: src/sys/i386/cpufreq est.c ) 
Message-ID:  <1031.1205848495@critter.freebsd.dk>
In-Reply-To: Your message of "Tue, 18 Mar 2008 08:40:18 -0400." <200803180840.18275.jhb@freebsd.org> 

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>To avoid lots of code duplication I think we would need to provide some sort 
>of "idle" device support in new-bus.  Possibly something like this:

We need different levels of "active" also, EnergyStar requires machines
to reduce ethernet speed from GE to 100M when idle, (this saves approx
2W, 1W in either end of the cable).

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



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