Return-Path: Delivered-To: 2-oracle-l@orafaq.com Received: (qmail 20307 invoked from network); 2 Feb 2007 05:26:41 -0600 Received: from freelists-180.iquest.net (HELO turing.freelists.org) (206.53.239.180) by 69.64.49.119 with SMTP; 2 Feb 2007 05:26:40 -0600 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 2EB465D1B7F; Fri, 2 Feb 2007 06:25:26 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 02497-01; Fri, 2 Feb 2007 06:25:26 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id A09295D1CB3; Fri, 2 Feb 2007 06:25:25 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Fri, 02 Feb 2007 05:59:24 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 1E6D35D110D for ; Fri, 2 Feb 2007 05:59:24 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 28118-02 for ; Fri, 2 Feb 2007 05:59:24 -0500 (EST) Received: from MSXVS04.trivadis.com (gromit.trivadis.com [212.249.206.2]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id DFAD35D1C0F for ; Fri, 2 Feb 2007 05:59:22 -0500 (EST) X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by Ecartis Subject: Re: How many of you use S.A.M.E? Date: Fri, 2 Feb 2007 12:00:32 +0100 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: How many of you use S.A.M.E? From: "Christian Antognini" To: X-archive-position: 45069 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-to: oracle-l-bounce@freelists.org X-original-sender: Christian.Antognini@trivadis.com Precedence: normal Reply-to: Christian.Antognini@trivadis.com List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: oracle-l X-List-ID: oracle-l List-subscribe: List-owner: List-post: List-archive: X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at avenirtech.net > By the way have you tried by chance what Loaiza suggested, > putting data in specfic physical sectors of a hard drive? > I am really curious how can that be achieved. S.A.M.E is > simple but putting data as he says makes life impossible > dont you think so? Hi I'm just formatting a new SAS disk, therefore here an example... With fdisk I divided the disk in 4 partitions which have the same size. Basically for each of them I simply specify the start/end cylinders. At the end I have the following situation: [root@helicon .vnc]# fdisk -l /dev/sda Disk /dev/sda: 73.4 GB, 73407820800 bytes 255 heads, 63 sectors/track, 8924 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 2231 17920476 83 Linux /dev/sda2 2232 4463 17928540 83 Linux /dev/sda3 4464 6695 17928540 83 Linux /dev/sda4 6696 8924 17904442+ 83 Linux And here a quick performance test with hdparm: [root@helicon .vnc]# hdparm -t /dev/sda? /dev/sda1: Timing buffered disk reads: 252 MB in 3.01 seconds = 83.73 MB/sec /dev/sda2: Timing buffered disk reads: 234 MB in 3.01 seconds = 77.62 MB/sec /dev/sda3: Timing buffered disk reads: 214 MB in 3.00 seconds = 71.27 MB/sec /dev/sda4: Timing buffered disk reads: 190 MB in 3.01 seconds = 63.22 MB/sec HTH Chris -- http://www.freelists.org/webpage/oracle-l