From owner-freebsd-questions@FreeBSD.ORG Sun Oct 22 14:49:47 2006 Return-Path: X-Original-To: questions@freebsd.org Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1355416A56F for ; Sun, 22 Oct 2006 14:49:47 +0000 (UTC) (envelope-from dkelly@HiWAAY.net) Received: from bee.hiwaay.net (bee.hiwaay.net [216.180.54.11]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7363143D55 for ; Sun, 22 Oct 2006 14:49:46 +0000 (GMT) (envelope-from dkelly@HiWAAY.net) Received: from [10.0.0.2] ([216.186.148.249]) (authenticated bits=0) by bee.hiwaay.net (8.13.6/8.13.6) with ESMTP id k9MEni6F1554868 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NO); Sun, 22 Oct 2006 09:49:45 -0500 (CDT) In-Reply-To: <200610212357.13244.josh@tcbug.org> References: <726CFBB1-2BB1-42A5-8A8F-96B880D316A3@HiWAAY.net> <200610212357.13244.josh@tcbug.org> Mime-Version: 1.0 (Apple Message framework v752.3) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <072D8753-B426-4686-9A81-F391DC5637BD@HiWAAY.net> Content-Transfer-Encoding: 7bit From: David Kelly Date: Sun, 22 Oct 2006 09:49:44 -0500 To: Josh Paetzel X-Mailer: Apple Mail (2.752.3) Cc: FreeBSD Questions Subject: Re: non-ATA66 cable? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Oct 2006 14:49:47 -0000 On Oct 21, 2006, at 11:57 PM, Josh Paetzel wrote: >>> Lite-On says "Supported transfer mode : PIO mode 4, DMA mode 2 >>> and Ultra DMA mode 2", so is there something I should do to my >>> FreeBSD to make this device happier? >> >> Try a different cable? > > It's not going to come up faster than UDMA33....and even if it did > UDMA33 is far faster than a DVD burner. Duh! My goof. I see that now. UDMA 2 is 33 Mbytes/sec. It is doing what Lite-On says it will do. :-( > What sort of write performance are you getting? growisofs peaks at 7.9x but averages 3.9. Buffers stay at 100% but for a rare 99%. Generally see 5 MB/sec using "systat -v". My concern is during writes the drive sound varies, presumably the disc speed as well. Discs verify and play correctly after. Maybe I shouldn't worry. I haven't found any better way to verify a burned image than "cmp /dev/dvd image.iso". Open to suggestions. When successful this method reports "EOF on image.iso" as apparently there is more data on the dvd. The original image is a multiple of 2048, so its not that. The Apple-labeled PIONEER DVD-RW DVR-111D in my Mac Pro (its sweet!) screams at 16x under MacOS X. One constant note during the entire burn. Seems to verify at 8x. Same media as used in the Lite-On. Will have to pull the Lite-On and put it in a Windows machine if I am to flash the firmware to the latest. -- David Kelly N4HHE, dkelly@HiWAAY.net ======================================================================== Whom computers would destroy, they must first drive mad.