From owner-freebsd-hackers@FreeBSD.ORG Wed Oct 27 18:17:09 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EC2DA1065670 for ; Wed, 27 Oct 2010 18:17:09 +0000 (UTC) (envelope-from des@des.no) Received: from smtp.des.no (smtp.des.no [194.63.250.102]) by mx1.freebsd.org (Postfix) with ESMTP id AA1418FC08 for ; Wed, 27 Oct 2010 18:17:09 +0000 (UTC) Received: from ds4.des.no (des.no [84.49.246.2]) by smtp.des.no (Postfix) with ESMTP id AD63B1FFC38; Wed, 27 Oct 2010 18:17:08 +0000 (UTC) Received: by ds4.des.no (Postfix, from userid 1001) id C7BD284507; Wed, 27 Oct 2010 20:17:06 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Peter Jeremy References: <4CC44E5B.9040902@infracaninophile.co.uk> <20101024152835.GA62748@muon.cran.org.uk> <19652.22833.731361.647776@y.dockes.com> <20101025093149.GA67314@server.vk2pj.dyndns.org> Date: Wed, 27 Oct 2010 20:17:06 +0200 In-Reply-To: <20101025093149.GA67314@server.vk2pj.dyndns.org> (Peter Jeremy's message of "Mon, 25 Oct 2010 20:31:49 +1100") Message-ID: <86y69jxzz1.fsf@ds4.des.no> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: Jean-Francois Dockes , freebsd-hackers@freebsd.org Subject: Re: dump cache performance X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Oct 2010 18:17:10 -0000 Peter Jeremy writes: > I've mostly convered to ZFS but still have UFS root (which is basically > a full base install without /var but including /usr/src - 94k inodes > and 1.7GB). I've run both the 8-stable ("stable") and patched ("jfd") du= mp=20 > alternately 4 times with 50/250MB cache with the following results: > > x stable > + jfd > +------------------------------------------------------------+ > | +| > | +| > | x +| > |x xx +| > ||AM A| > +------------------------------------------------------------+ > N Min Max Median Avg Stdd= ev > x 4 9413 9673 9568 9555.5 107.121= 43 > + 4 15359 15359 15359 15359 = 0 9413 what? Puppies? DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no