Date: Tue, 26 Jan 2010 19:17:44 +0000 From: Bruce Cran <bruce@cran.org.uk> To: Dan Naumov <dan.naumov@gmail.com> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: immense delayed write to file system (ZFS and UFS2), performance issues Message-ID: <20100126191744.00000305@unknown> In-Reply-To: <cf9b1ee01001261045j3b0901cen74469a545e47fb49@mail.gmail.com> References: <cf9b1ee01001261045j3b0901cen74469a545e47fb49@mail.gmail.com>
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On Tue, 26 Jan 2010 20:45:10 +0200 Dan Naumov <dan.naumov@gmail.com> wrote: > The disks are of exact same model and look to be same firmware. Should > I be worried that the newer disk has, in 136 hours reached a higher > Load Cycle count twice as big as on the disk thats 5253 hours old? There's a similar problem with laptop HDDs and APM settings that cause a high load_cycle_count too. According to https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/59695 and many blog entries, parking the heads frequently can shorten the HDD lifetime. -- Bruce Cran
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