From owner-freebsd-stable@FreeBSD.ORG Tue Jan 19 08:16:45 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 BA6BB106566C for ; Tue, 19 Jan 2010 08:16:45 +0000 (UTC) (envelope-from gerrit@pmp.uni-hannover.de) Received: from mrelay1.uni-hannover.de (mrelay1.uni-hannover.de [130.75.2.106]) by mx1.freebsd.org (Postfix) with ESMTP id 2AC758FC0A for ; Tue, 19 Jan 2010 08:16:44 +0000 (UTC) Received: from www.pmp.uni-hannover.de (www.pmp.uni-hannover.de [130.75.117.2]) by mrelay1.uni-hannover.de (8.14.2/8.14.2) with ESMTP id o0J8GfuG001859; Tue, 19 Jan 2010 09:16:43 +0100 Received: from pmp.uni-hannover.de (arc.pmp.uni-hannover.de [130.75.117.1]) by www.pmp.uni-hannover.de (Postfix) with SMTP id DA8C624; Tue, 19 Jan 2010 09:16:41 +0100 (CET) Date: Tue, 19 Jan 2010 09:16:41 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: Garrett Moore Message-Id: <20100119091641.cc59f03f.gerrit@pmp.uni-hannover.de> In-Reply-To: <7346c5c61001181841j3653a7c3m32bc033c8c146a92@mail.gmail.com> References: <4B54C100.9080906@mail.zedat.fu-berlin.de> <4B54C5EE.5070305@pp.dyndns.biz> <201001191250.23625.doconnor@gsoft.com.au> <7346c5c61001181841j3653a7c3m32bc033c8c146a92@mail.gmail.com> Organization: Albert-Einstein-Institut (MPI =?ISO-8859-1?Q?f=FCr?= Gravitationsphysik & IGP =?ISO-8859-1?Q?Universit=E4t?= Hannover) X-Mailer: Sylpheed 2.7.1 (GTK+ 2.18.4; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-PMX-Version: 5.5.9.388399, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2010.1.19.80317 Cc: "O. Hartmann" , freebsd-stable@freebsd.org 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, 19 Jan 2010 08:16:45 -0000 On Mon, 18 Jan 2010 21:41:53 -0500 Garrett Moore wrote about Re: immense delayed write to file system (ZFS and UFS2), performance issues: GM> The drives being discussed in my related thread (regarding poor GM> performance) are all WD Green drives. I have used wdidle3 to set all GM> of my drive timeouts to 5 minutes. I'll see what sort of difference GM> this makes for performance. GM> Even if it makes no difference to performance, thank you for pointing GM> it out GM> -- my drives have less than 2,000 hours on them and were all over GM> 90,000 load cycles due to this moronic factory setting. Since changing GM> the timeout, they haven't parked (which is what I would expect). Thanks for bringing up this topic here. I have drives showing up close to 800000 load cycle counts here. Guess it's time for that fix... :-| cu Gerrit