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> 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 Message-ID: <20101021135442.000054c9@unknown> In-Reply-To: <86zku77mj6.fsf@ds4.des.no> References: <201009161742.24228.tijl@coosemans.org> <201009161619.o8GGJAmv035378@lurza.secnetix.de> <20101018155944.GA12425@freebsd.org> <868w1r92rf.fsf@ds4.des.no> <20101021122110.GA65490@freebsd.org> <86zku77mj6.fsf@ds4.des.no>
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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
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