Date: Fri, 22 Oct 2010 12:00:56 +0100 From: Bruce Cran <bruce@cran.org.uk> To: Tijl Coosemans <tijl@coosemans.org> Cc: freebsd-hackers@freebsd.org, Paul Wootton <paul@fletchermoorland.co.uk> Subject: Re: Summary: Re: Spin down HDD after disk sync or before power off Message-ID: <20101022120056.0000328a@unknown> In-Reply-To: <201010221207.42994.tijl@coosemans.org> References: <201009161742.24228.tijl@coosemans.org> <864ocf7esp.fsf@ds4.des.no> <4CC0BF96.1050806@fletchermoorland.co.uk> <201010221207.42994.tijl@coosemans.org>
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On Fri, 22 Oct 2010 12:07:36 +0200 Tijl Coosemans <tijl@coosemans.org> wrote: > FreeBSD frequently accesses hard disks (log files, flushing dirty > memory pages every 30s,...) and laptop drives tend to have aggressive > power saving settings by default. That's why your load cycle is so > high. I'm not sure the APM value updates the idle3 timer inside the drive: it may be necessary to run WD's wdidle3.exe tool to change the power management timer. And yes, people are rather annoyed that it's necessary to have a copy of DOS to update the drive! -- Bruce Cran
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