From owner-freebsd-current@FreeBSD.ORG Thu Jun 24 12:23:58 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 7B18816A4CE for ; Thu, 24 Jun 2004 12:23:58 +0000 (GMT) Received: from av1-2-sn4.m-sp.skanova.net (av1-2-sn4.m-sp.skanova.net [81.228.10.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id A881A43D64 for ; Thu, 24 Jun 2004 12:23:57 +0000 (GMT) (envelope-from daniel_k_eriksson@telia.com) Received: by av1-2-sn4.m-sp.skanova.net (Postfix, from userid 502) id D420737F01; Thu, 24 Jun 2004 14:22:38 +0200 (CEST) Received: from smtp2-1-sn4.m-sp.skanova.net (smtp2-1-sn4.m-sp.skanova.net [81.228.10.183]) by av1-2-sn4.m-sp.skanova.net (Postfix) with ESMTP id C60EE37E47 for ; Thu, 24 Jun 2004 14:22:38 +0200 (CEST) Received: from gadget (h130n1fls11o822.telia.com [213.64.66.130]) by smtp2-1-sn4.m-sp.skanova.net (Postfix) with ESMTP id AE6C337E56 for ; Thu, 24 Jun 2004 14:22:38 +0200 (CEST) From: "Daniel Eriksson" To: "'FreeBSD Current'" Date: Thu, 24 Jun 2004 14:22:39 +0200 Organization: Home Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Subject: Multiple choices for RAID-0, best performance? 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: Thu, 24 Jun 2004 12:23:58 -0000 (previously posted on -questions without any replies) With the recent addition of a geom-enabled vinum, and the discussed (but = not yet functional?) geom stripe module, we now have 4 different choices for software RAID-0 on ATA devices (the other two are regular vinum and ataraid). I'm currently using a mix of vinum and ataraid on one of my servers, but = I haven't been in a position to do any proper performance measurements yet (it's a production server). Are there any obvious performance differences between the different ways = of doing RAID-0? Any difference in resource usage? Also, will the RAID-0 performance (transfer speed and/or resource usage) = of ataraid be affected a lot depending on what controller is used? For = example would there be any performance difference between ataraid on a = HPT374-based card (such as the Highpoint RocketRAID 454) and one of the new Promise = cards (which we have really good drivers for afaik). Daniel Eriksson