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Date: Wed, 10 Aug 2005 14:49:41 -0400
From: Bill Davidsen <davidsen@tmr.com>
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To: Jim Crilly <jim@why.dont.jablowme.net>
CC: James Bruce <bruce@andrew.cmu.edu>, Lee Revell <rlrevell@joe-job.com>,
       Marc Ballarin <Ballarin.Marc@gmx.de>, linux-kernel@vger.kernel.org
Subject: Re: Power consumption HZ100, HZ250, HZ1000: new numbers
References: <20050730004924.087a7630.Ballarin.Marc@gmx.de> <1122678943.9381.44.camel@mindpipe> <20050730120645.77a33a34.Ballarin.Marc@gmx.de> <1122746718.14769.4.camel@mindpipe> <20050730195116.GB9188@elf.ucw.cz> <1122753864.14769.18.camel@mindpipe> <20050730201049.GE2093@elf.ucw.cz> <42ED32D3.9070208@andrew.cmu.edu> <20050731211020.GB27433@elf.ucw.cz> <20050731220754.GE7362@voodoo>
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Jim Crilly wrote:
> On 07/31/05 11:10:20PM +0200, Pavel Machek wrote:
> 
>>>I really like having 250HZ as an _option_, but what I don't see is why 
>>>it should be the _default_.  I believe this is Lee's position as
>>>Last I checked, ACPI and CPU speed scaling were not enabled by default; 
>>
>>Kernel defaults are irelevant; distros change them anyway. [But we
>>probably want to enable ACPI and cpufreq by default, because that
>>matches what 99% of users will use.]
>>
> 
> 
> If the kernel defaults are irrelevant, then it would make more sense to
> leave the default HZ as 1000 and not to enable the cpufreq and ACPI in
> order to keep with the principle of least surprise for people who do use
> kernel.org kernels.
> 
> Jim.

Thank you Jim, Plauger's "law of least astonishment."