From owner-freebsd-hardware Mon Aug 24 09:42:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id JAA24751 for freebsd-hardware-outgoing; Mon, 24 Aug 1998 09:42:15 -0700 (PDT) (envelope-from owner-freebsd-hardware@FreeBSD.ORG) Received: from loviatar.webcom.com (loviatar.webcom.com [209.1.28.41]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id JAA24734 for ; Mon, 24 Aug 1998 09:42:12 -0700 (PDT) (envelope-from graeme@echidna.com) Received: from kigal.webcom.com (kigal.webcom.com [209.1.28.57]) by loviatar.webcom.com (8.9.1/8.9.1) with SMTP id FAA22232; Mon, 18 Feb 2036 05:17:40 -0800 Received: from [199.183.207.40] by inanna.webcom.com (WebCom SMTP 1.2.1) with SMTP id 2973066; Mon Aug 24 09:40 PDT 1998 Message-Id: <35E1C10E.1AA3@echidna.com> Date: Mon, 24 Aug 1998 12:37:50 -0700 From: Graeme Tait Organization: Echidna X-Mailer: Mozilla 2.02 (Win16; I) Mime-Version: 1.0 To: freebsd-hardware@FreeBSD.ORG Cc: info@boatbooks.com Subject: Re: UDMA Support References: <199808221929.TAA20855@dingo.cdrom.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Mike Smith wrote: > > > Does FreeBSD have Ultra DMA support or will it have it? > > FreeBSD 3.0 supports IDE DMA. SCSI disks will give better performance > in multiple-disk or high load scenarios. Assuming I'm running an Ultra ATA drive (IBM 7200 RPM 10GB or 14GB to be specific) under 2.2.7, what benefits would the Ultra DMA support under 3.0 bring, and under what conditions (read/write, file size etc.)? -- Graeme Tait - Echidna To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message