From owner-freebsd-performance@FreeBSD.ORG Sat Dec 23 05:21:57 2006 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from localhost.my.domain (localhost [127.0.0.1]) by hub.freebsd.org (Postfix) with ESMTP id BBA1B16A403; Sat, 23 Dec 2006 05:21:56 +0000 (UTC) (envelope-from davidxu@freebsd.org) From: David Xu To: freebsd-performance@freebsd.org Date: Sat, 23 Dec 2006 13:21:51 +0800 User-Agent: KMail/1.8.2 References: <458B3651.8090601@paradise.net.nz> <20061222222757.G18486@delplex.bde.org> <20061222202933.709d2279@Magellan.Leidinger.net> In-Reply-To: <20061222202933.709d2279@Magellan.Leidinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200612231321.52178.davidxu@freebsd.org> Cc: Alexander Leidinger , Adrian Chadd , Mark Kirkwood , Bruce Evans , rookie@gufi.org Subject: Re: Cached file read performance X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Dec 2006 05:21:57 -0000 On Saturday 23 December 2006 03:29, Alexander Leidinger wrote: > I want to point out http://www.freebsd.org/projects/ideas/#p-memcpy > here. Just in case someone wants to play around a little bit. > > Bye, > Alexander. I have read the code, if a buffer is not aligned at 16 bytes boundary, it will not use FPU to copy data, but user buffer is not always 16 bytes aligned. David Xu