From owner-freebsd-fs@FreeBSD.ORG Thu Jul 21 21:46:21 2011 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 197501065670 for ; Thu, 21 Jul 2011 21:46:21 +0000 (UTC) (envelope-from bfriesen@simple.dallas.tx.us) Received: from blade.simplesystems.org (blade.simplesystems.org [65.66.246.74]) by mx1.freebsd.org (Postfix) with ESMTP id D5CAA8FC12 for ; Thu, 21 Jul 2011 21:46:20 +0000 (UTC) Received: from freddy.simplesystems.org (freddy.simplesystems.org [65.66.246.65]) by blade.simplesystems.org (8.14.4+Sun/8.14.4) with ESMTP id p6LLkIZB014182; Thu, 21 Jul 2011 16:46:18 -0500 (CDT) Date: Thu, 21 Jul 2011 16:46:18 -0500 (CDT) From: Bob Friesenhahn X-X-Sender: bfriesen@freddy.simplesystems.org To: Martin Matuska In-Reply-To: <4E286F1F.6010502@FreeBSD.org> Message-ID: References: <4E286F1F.6010502@FreeBSD.org> User-Agent: Alpine 2.01 (GSO 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.2 (blade.simplesystems.org [65.66.246.90]); Thu, 21 Jul 2011 16:46:19 -0500 (CDT) Cc: freebsd-fs@freebsd.org Subject: Re: ZFS and large directories - caveat report 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: Thu, 21 Jul 2011 21:46:21 -0000 On Thu, 21 Jul 2011, Martin Matuska wrote: > Quoting: > ... The default record size ZFS utilizes is 128K, which is good for many > storage servers that will harbor larger files. However, when dealing > with many files that are only a matter of tens of kilobytes, or even > bytes, considerable slowdown will result. ZFS can easily alter the I don't see how this can be. Short files are written as short blocks so the maximum block size should not matter. Bob -- Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/