From owner-freebsd-questions Tue Aug 11 18:08:54 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA15108 for freebsd-questions-outgoing; Tue, 11 Aug 1998 18:08:54 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA15068 for ; Tue, 11 Aug 1998 18:08:46 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id KAA15367; Wed, 12 Aug 1998 10:38:15 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id KAA25436; Wed, 12 Aug 1998 10:38:14 +0930 (CST) Message-ID: <19980812103813.X22754@freebie.lemis.com> Date: Wed, 12 Aug 1998 10:38:13 +0930 From: Greg Lehey To: Scott Leutenegger , freebsd-questions@FreeBSD.ORG Subject: Re: raw disk question References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: ; from Scott Leutenegger on Tue, Aug 11, 1998 at 05:21:57PM -0600 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tuesday, 11 August 1998 at 17:21:57 -0600, Scott Leutenegger wrote: > Hi, > > Want to help convert a solaris user to FreeBSD? > > Question: Does FreeBSD support raw disks access? Yes. > i.e. a read/write to/from disk does NOT access > the file cache in memory, but rather 100% of the > accesses go-to/come-from disk. > > If so, how do I create the raw disk partition? It's there already. For every cooked disk /dev/sd, you have a raw disk /dev/rsd. > Note: I am trying to decide whether to install solarix x86 or > FreeBSD on a cluster of PCs to build a parallel database > application (parallel multi-dimensional indexing) > I know solaris x86 supports this, but have been lead to believe > FreeBSD will be faster, easier to install/maintain, and > comes loaded with most of the software (gcc/g++/sockets/perl) I need. > (please correct me if I am wrong) That really depends on the database application. FreeBSD doesn't have kernel threads. Greg -- See complete headers for address and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message