Date: Tue, 26 Jan 2010 18:19:55 +0000 From: Bruce Cran <bruce@cran.org.uk> To: Morgan =?ISO-8859-1?Q?Wesstr=F6m?= <freebsd-questions@pp.dyndns.biz> Cc: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>, freebsd-stable@freebsd.org, Garrett Moore <garrettmoore@gmail.com> Subject: Re: immense delayed write to file system (ZFS and UFS2), performance issues Message-ID: <20100126181955.000065cb@unknown> In-Reply-To: <4B557B5A.8040902@pp.dyndns.biz> References: <4B54C100.9080906@mail.zedat.fu-berlin.de> <4B54C5EE.5070305@pp.dyndns.biz> <201001191250.23625.doconnor@gsoft.com.au> <7346c5c61001181841j3653a7c3m32bc033c8c146a92@mail.gmail.com> <4B557B5A.8040902@pp.dyndns.biz>
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On Tue, 19 Jan 2010 10:28:58 +0100 Morgan Wesstr=F6m <freebsd-questions@pp.dyndns.biz> wrote: > Garrett Moore wrote: > > The drives being discussed in my related thread (regarding poor > > performance) are all WD Green drives. I have used wdidle3 to set > > all of my drive timeouts to 5 minutes. I'll see what sort of > > difference this makes for performance. > >=20 > > Even if it makes no difference to performance, thank you for > > pointing it out -- my drives have less than 2,000 hours on them and > > were all over 90,000 load cycles due to this moronic factory > > setting. Since changing the timeout, they haven't parked (which is > > what I would expect). > >=20 >=20 > You're welcome. I just feel as bad for you as for everyone else who > has bought these obviously Windoze optimized harddrives. Unfortunately > neither wdidle3 nor an updated firmware is available or functioning on > the latest models in the Green series. At least that's what I've read > from other people having this issue. WD only claims they don't support > Linux and they probably have never heard of FreeBSD. You might be able to tune the APM settings on the drive using sysutils/ataidle to change the amount of time the drive waits until parking the heads. --=20 Bruce Cran
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