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Date:      Tue, 18 Mar 2008 01:12:08 +0100
From:      Kris Kennaway <kris@FreeBSD.org>
To:        Poul-Henning Kamp <phk@phk.freebsd.dk>
Cc:        arch@FreeBSD.org
Subject:   Re: Power-Mgt (Was: Re: cvs commit: src/sys/i386/cpufreq est.c )
Message-ID:  <47DF08D8.2070608@FreeBSD.org>
In-Reply-To: <5753.1205785282@critter.freebsd.dk>
References:  <5753.1205785282@critter.freebsd.dk>

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Poul-Henning Kamp wrote:
> In message <47DED21C.4070108@FreeBSD.org>, Kris Kennaway writes:
> 
>> I think this is a great idea, but one of the big problems is probably 
>> going to be dealing with hardware quirks.  e.g. we can't even enable 
>> powerd by default because e.g. acpi_throttle hangs on some systems.  It 
>> might be tricky to get power management to the stage where it works for 
>> everyone and can be done automatically.
> 
> I'd expect that this will improve over time, just like all other
> technologies from ISA to PCI bus implementations did.
> 
> But yes, it will take time & effort, but given the current
> cleantech/greentech buzz, I think we'd better get moving.

Yeah, absolute worst case is we can make progress in automatic 
deployment by whitelisting.

What SoC projects can you think of in this arena?

Kris



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