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Date: Thu, 21 Oct 2010 13:54:42 +0100
From: Bruce Cran <bruce@cran.org.uk>
To: Dag-Erling =?ISO-8859-1?Q?Sm=F8rgrav?= <des@des.no>
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Cc: Alexander Best <arundel@freebsd.org>, mav@freebsd.org,
	Tijl Coosemans <tijl@coosemans.org>,
	Oliver Fromme <olli@lurza.secnetix.de>, freebsd-hackers@freebsd.org
Subject: Re: Summary: Re: Spin down HDD after disk sync or before power off
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On Thu, 21 Oct 2010 14:33:49 +0200
Dag-Erling Sm=F8rgrav <des@des.no> wrote:

> The problem with setting a short idle timeout is that, on a typical
> laptop or desktop system, you end up spinning the disk down and back
> up several hundred times a day, which increases power consumption, I/O
> latency and wear.

Do we think our users are silly enough to set a short timeout of just a
few minutes?  I'd think most would use a setting of 20-30 minutes at
a minimum. I never did understand why there were so many warnings;
after all, some laptops even come with a default APM scheme in their
HDDs that powers the disk down after 7 seconds!

--=20
Bruce Cran