From owner-freebsd-stable@FreeBSD.ORG Tue Jan 26 18:19:51 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 295DD106566C for ; Tue, 26 Jan 2010 18:19:51 +0000 (UTC) (envelope-from bruce@cran.org.uk) Received: from muon.cran.org.uk (unknown [IPv6:2001:470:1f09:679::1]) by mx1.freebsd.org (Postfix) with ESMTP id E43698FC0C for ; Tue, 26 Jan 2010 18:19:50 +0000 (UTC) Received: from unknown (client-86-10-3-126.leed.adsl.virginmedia.com [86.10.3.126]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by muon.cran.org.uk (Postfix) with ESMTPSA id B8AEB849F; Tue, 26 Jan 2010 18:20:07 +0000 (UTC) Date: Tue, 26 Jan 2010 18:19:55 +0000 From: Bruce Cran To: Morgan =?ISO-8859-1?Q?Wesstr=F6m?= 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> X-Mailer: Claws Mail 3.7.2cvs27 (GTK+ 2.16.0; i586-pc-mingw32msvc) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: "O. Hartmann" , freebsd-stable@freebsd.org, Garrett Moore Subject: Re: immense delayed write to file system (ZFS and UFS2), performance issues X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Jan 2010 18:19:51 -0000 On Tue, 19 Jan 2010 10:28:58 +0100 Morgan Wesstr=F6m 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