From owner-freebsd-stable@FreeBSD.ORG Tue Jan 19 02:41:55 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 0B1111065670 for ; Tue, 19 Jan 2010 02:41:55 +0000 (UTC) (envelope-from garrettmoore@gmail.com) Received: from mail-iw0-f177.google.com (mail-iw0-f177.google.com [209.85.223.177]) by mx1.freebsd.org (Postfix) with ESMTP id C063F8FC18 for ; Tue, 19 Jan 2010 02:41:54 +0000 (UTC) Received: by iwn7 with SMTP id 7so2507840iwn.7 for ; Mon, 18 Jan 2010 18:41:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=jMiJnGtS+iAMKfMfEFL3pMMM4sPT3sA6DGD9Voi9hds=; b=scRqjsvOFmGr1Mv3Y8tVAEQ8TIkvwFtwapG6pefUbIZrtfTiKXvTCH+5mnCjlNYxhz 924H5JPSVJXVKAOmVokr0gWamIP/IYPnb6CH1/1FO4letPXLmShmmX6R0Y34D4KHE6Af lyMHOYh22eSOkjHo8lioXFK5TJel+UEX6Bk1c= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=RqPc5+LzKfMPmTSf8OdEUZuwG+juH7fUftHbePqgXRi2O3NGEv8Ft+UwjIIH07nDiA MkXtX90qZxjt6ntbtkDfjw3kLJfrfOFLfIsJAapgHdNUCbrDthbt0eMSQ1Cs6TDGXndZ CGDLyLhM/JxpNMxwUlIMGyROnQBPM2nN31X3o= MIME-Version: 1.0 Received: by 10.231.154.197 with SMTP id p5mr1013733ibw.28.1263868913874; Mon, 18 Jan 2010 18:41:53 -0800 (PST) In-Reply-To: <201001191250.23625.doconnor@gsoft.com.au> References: <4B54C100.9080906@mail.zedat.fu-berlin.de> <4B54C5EE.5070305@pp.dyndns.biz> <201001191250.23625.doconnor@gsoft.com.au> Date: Mon, 18 Jan 2010 21:41:53 -0500 Message-ID: <7346c5c61001181841j3653a7c3m32bc033c8c146a92@mail.gmail.com> From: Garrett Moore To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: "O. Hartmann" 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 02:41:55 -0000 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 timeout= s to 5 minutes. I'll see what sort of difference this makes for performance. Even if it makes no difference to performance, thank you for pointing it ou= t -- 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). On Mon, Jan 18, 2010 at 9:20 PM, Daniel O'Connor wro= te: > On Tue, 19 Jan 2010, Morgan Wesstr=F6m wrote: > > The disks involved don't happen to be Western Digital Green Power > > disks, do they? The Intelli-Park function in these disks are wrecking > > havoc with I/O in Linux-land at least, causing massive stalls and > > iowait through the roof during the 25-30 seconds it takes for the > > heads to unload after parking. I have two of these disks sitting on > > my desk now collecting dust... > > There's this.. > http://www.silentpcreview.com/Terabyte_Drive_Fix > > and you can get the tool at.. > http://home.arcor.de/ghostadmin/wdidle3_1_00.zip > > I am planning to try this out tonight.. > > -- > Daniel O'Connor software and network engineer > for Genesis Software - http://www.gsoft.com.au > "The nice thing about standards is that there > are so many of them to choose from." > -- Andrew Tanenbaum > GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C >