From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Lee Subject: Re: raid 1 vs raid 0+1 Date: 29 Oct 2002 08:16:06 -0800 Sender: linux-raid-owner@vger.kernel.org Message-ID: <1035908166.6345.311.camel@ralph.plexio.private> References: <200210291229.g9TCTcO05488@gg.cyberlab.de> <20021029131453.GB24171@unthought.net> <1035904587.13219.304.camel@ralph.plexio.private> <20021029153930.GA21099@smeagol> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20021029153930.GA21099@smeagol> To: Raid List-Id: linux-raid.ids On Tue, 2002-10-29 at 07:39, Adam Luter wrote: > On Tue, Oct 29, 2002 at 07:16:26AM -0800, Stephen Lee wrote: > Of course alternate conclusions are that my raid-5 array suffers from > using two channels per drive (I know -- but when I put two promise > cards they or linux has DMA problems) and that I'm still behind the > pack when you throw 10krpm at me :) (2.2 seconds is nice!). It's around 2.0 seconds if I direct stdout to /dev/null ;-) I also have a system using a Promise raid controller with 2x7200rpm ide drives in a raid1 configuration (AMD K7 1.4Gig, ext2, RH 2.4.2 kernel, Promises proprietary driver) and the same test produced a speed of 2.6 seconds. Stephen