From owner-freebsd-questions Sun Sep 1 14:29:52 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 164AA37B405 for ; Sun, 1 Sep 2002 14:29:46 -0700 (PDT) Received: from mailsrv.otenet.gr (mailsrv.otenet.gr [195.170.0.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2645343E4A for ; Sun, 1 Sep 2002 14:29:45 -0700 (PDT) (envelope-from keramida@freebsd.org) Received: from hades.hell.gr (patr530-b166.otenet.gr [212.205.244.174]) by mailsrv.otenet.gr (8.12.4/8.12.4) with ESMTP id g81LTf9M020644; Mon, 2 Sep 2002 00:29:43 +0300 (EEST) Received: from hades.hell.gr (hades [127.0.0.1]) by hades.hell.gr (8.12.6/8.12.6) with ESMTP id g81LTfHc027382; Mon, 2 Sep 2002 00:29:41 +0300 (EEST) (envelope-from keramida@freebsd.org) Received: (from charon@localhost) by hades.hell.gr (8.12.6/8.12.6/Submit) id g81LTe7Z027381; Mon, 2 Sep 2002 00:29:40 +0300 (EEST) (envelope-from keramida@freebsd.org) Date: Mon, 2 Sep 2002 00:29:39 +0300 (EEST) From: Giorgos Keramidas X-X-Sender: charon@hades To: Peter Leftwich Cc: FreeBSD LIST Subject: Re: 0.9 % frag In-Reply-To: <20020901170730.A40945-100000@earl-grey.cloud9.net> Message-ID: <20020902002730.P27353-100000@hades> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 2002-09-01 17:08, Peter Leftwich wrote: > At boot up, my system says: > > [Mounting root "/" to...] /dev/ad0s2a: > FILESYSTEM CLEAN; SKIPPING CHECKS > /dev/ad0s2a: > clean, 2081967 free > (102551 frags, 247427 blocks, 0.9% fragmentation) > > Should I be concerned about 0.9% fragmentation? Can fsck make it lower? Short answer: no, and no. For a longer answer, you have to understand a bit the way FreeBSD splits the disk in blocks and 'fragments', and the way those are allocated to data. This is not the same "fragmentation" you might have heard of when learning about tools like DOS's defrag utility. -- FreeBSD: The Power to Serve -- http://www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message