From owner-freebsd-fs@FreeBSD.ORG Tue Dec 1 00:42:03 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BBC3E106566C for ; Tue, 1 Dec 2009 00:42:03 +0000 (UTC) (envelope-from andrew@modulus.org) Received: from email.octopus.com.au (email.octopus.com.au [122.100.2.232]) by mx1.freebsd.org (Postfix) with ESMTP id 7921B8FC08 for ; Tue, 1 Dec 2009 00:42:03 +0000 (UTC) Received: by email.octopus.com.au (Postfix, from userid 1002) id DE2BE5CBA95; Tue, 1 Dec 2009 11:19:21 +1100 (EST) X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on email.octopus.com.au X-Spam-Level: X-Spam-Status: No, score=-1.4 required=10.0 tests=ALL_TRUSTED autolearn=failed version=3.2.3 Received: from [10.1.50.60] (ppp121-45-161-121.lns20.syd6.internode.on.net [121.45.161.121]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: admin@email.octopus.com.au) by email.octopus.com.au (Postfix) with ESMTP id D83CE5CB8C1; Tue, 1 Dec 2009 11:19:17 +1100 (EST) Message-ID: <4B146631.8040305@modulus.org> Date: Tue, 01 Dec 2009 11:41:21 +1100 From: Andrew Snow User-Agent: Thunderbird 2.0.0.14 (X11/20080523) MIME-Version: 1.0 To: "James R. Van Artsdalen" References: <2ae8edf30911300120x627e42a9ha2cf003e847d4fbd@mail.gmail.com> <4B139AEB.8060900@jrv.org> <2ae8edf30911300425g4026909bm9262f6abcf82ddcd@mail.gmail.com> <5f67a8c40911301233s46a2818at9051c4ebbacf7e25@mail.gmail.com> <4B14495E.7050306@modulus.org> <4B1463F5.5020403@jrv.org> In-Reply-To: <4B1463F5.5020403@jrv.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-fs Subject: Re: ZFS guidelines - preparing for future storage expansion X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Dec 2009 00:42:03 -0000 James R. Van Artsdalen wrote: > All of the disks are lit up at the same time: there's no > one-disk-at-a-time. Yeah, that is the case for large files but I have seen it slow down alot for highly fragmented filesystems with lots of small files. - Andrew