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Date:      Thu, 7 Apr 2005 15:03:29 +0200
From:      Bruno Ducrot <ducrot@poupinou.org>
To:        Daniel O'Connor <doconnor@gsoft.com.au>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: My experience with cpufreq in -STABLE
Message-ID:  <20050407130329.GD2298@poupinou.org>
In-Reply-To: <200504071049.32854.doconnor@gsoft.com.au>
References:  <200504041645.j34Gj2ow002999@pinky.frank-behrens.de> <200504060649.j366nGQg021228@pinky.frank-behrens.de> <20050406140102.GY2298@poupinou.org> <200504071049.32854.doconnor@gsoft.com.au>

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On Thu, Apr 07, 2005 at 10:49:25AM +0930, Daniel O'Connor wrote:
> The algorithm used by the acpi_ppc module semed quite good to me when I used 
> it (before the frequency stuff was committed).
> http://www.spa.is.uec.ac.jp/~nfukuda/software/index.html

I saw it.  I have some concern about the linear behaviour when going
up (don't mind, I'm never happy ;).  We'll miss the case where
there are bursts.  There were some heuristics such as the
excess_cycle trick that may help if we consider this algorithm.
(search ReducedEnergyScheduling.ps in your favorite search engine).

Cheers,

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.



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