From owner-freebsd-current@FreeBSD.ORG Fri Jul 30 12:00:13 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0A17116A4CE; Fri, 30 Jul 2004 12:00:13 +0000 (GMT) Received: from web.portaone.com (web.portaone.com [195.70.151.35]) by mx1.FreeBSD.org (Postfix) with ESMTP id 08C3C43D2F; Fri, 30 Jul 2004 12:00:12 +0000 (GMT) (envelope-from sobomax@portaone.com) Received: from [192.168.0.20] (portacare.portaone.com [195.140.247.242]) (authenticated bits=0) by web.portaone.com (8.12.8p2/8.12.8) with ESMTP id i6UC05Wq024926 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 30 Jul 2004 14:00:07 +0200 (CEST) (envelope-from sobomax@portaone.com) Message-ID: <410A3833.7030502@portaone.com> Date: Fri, 30 Jul 2004 14:59:47 +0300 From: Maxim Sobolev Organization: Porta Software Ltd User-Agent: Mozilla Thunderbird 0.7.2 (Windows/20040707) X-Accept-Language: en-us, en MIME-Version: 1.0 To: sos@freebsd.org, release@freebsd.org, current@freebsd.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: Is there still sufficient reason for hw.ata.atapi_dma being 0 by default? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Jul 2004 12:00:13 -0000 Since high-speed CD-RW/DVD-RW recorders (32x - 52x) are commodity now IMO it makes sense to review hw.ata.atapi_dma default of 0, since apparently PIO mode can't support necessary sustained data transfer rates anymore. For example I had had problems burning RWs on 16-24x with several drives in PIO mode, which gone when I've switched to DMA. I easily imagine newbies who make a conclusion that "FreeBSD sucks" after installing FreeBSD and finding that they can't burn CDs, while other operating system do it without any problems. -Maxim