From owner-svn-src-all@FreeBSD.ORG Fri May 27 10:08:45 2011 Return-Path: Delivered-To: svn-src-all@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3E6631065843 for ; Fri, 27 May 2011 10:08:45 +0000 (UTC) (envelope-from vadim@nuclight.avtf.net) Received: from nuclight.avtf.net (nuclight.avtf.net [82.117.70.99]) by mx1.freebsd.org (Postfix) with ESMTP id 7B52F8FC0A for ; Fri, 27 May 2011 10:08:42 +0000 (UTC) Received: from kernblitz.nuclight.avtf.net (vadim@localhost [127.0.0.1]) by nuclight.avtf.net (8.14.4/8.14.4) with ESMTP id p4RA8cMK024055; Fri, 27 May 2011 17:08:38 +0700 (NOVST) (envelope-from vadim@kernblitz.nuclight.avtf.net) Received: (from vadim@localhost) by kernblitz.nuclight.avtf.net (8.14.4/8.14.4/Submit) id p4RA8bgD024052; Fri, 27 May 2011 17:08:37 +0700 (NOVST) (envelope-from vadim) Message-Id: <201105271008.p4RA8bgD024052@kernblitz.nuclight.avtf.net> To: Kirk McKusick From: Vadim Goncharov In-Reply-To: <201105261822.p4QIMn0Y075807@svn.freebsd.org> References: <201105261822.p4QIMn0Y075807@svn.freebsd.org> X-Comment-To: Kirk McKusick Date: Fri, 27 May 2011 17:08:36 +0700 User-Agent: slrn/0.9.9p1 (FreeBSD) Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: svn-src-all@FreeBSD.org Subject: Re: svn commit: r222319 - head/sbin/newfs X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: vadim_nuclight@mail.ru List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 May 2011 10:08:45 -0000 Hi Kirk McKusick! On Thu, 26 May 2011 18:22:49 +0000 (UTC); Kirk McKusick wrote: > Author: mckusick > Date: Thu May 26 18:22:49 2011 > New Revision: 222319 > URL: http://svn.freebsd.org/changeset/base/222319 > Log: > Raise the default blocksize for UFS/FFS filesystems from > 16K to 32K and the default fragment size from 2K to 4K. > > The rational is that most disks are now running with 4K > sectors. While they can (slowly) simulate 512-byte sectors > by doing a read-modify-write, it is desirable to avoid this > functionality. By raising the minimum filesystem allocation > to 4K, the filesystem will never trigger the small sector > emulation. > > Also, the growth of disk sizes has lead us to double the > default block size about every ten years. The rise from 8K > to 16K blocks was done in 2001. So, by the 10-year metric, > the time has come for 32K blocks. May be it's also the time to grow directory block size allocation? It is 512 bytes still. -- WBR, Vadim Goncharov. ICQ#166852181 mailto:vadim_nuclight@mail.ru [Moderator of RU.ANTI-ECOLOGY][FreeBSD][http://antigreen.org][LJ:/nuclight]