Return-Path: Received: from ensim.rackshack.net (root@localhost) by orafaq.net (8.11.6/8.11.6) with ESMTP id h8J07PF03819 for ; Thu, 18 Sep 2003 19:07:25 -0500 X-ClientAddr: 66.27.56.210 Received: from ns3.fatcity.com (rrcs-west-66-27-56-210.biz.rr.com [66.27.56.210]) by ensim.rackshack.net (8.11.6/8.11.6) with ESMTP id h8J07O503814 for ; Thu, 18 Sep 2003 19:07:25 -0500 Received: from ns3.fatcity.com (localhost.localdomain [127.0.0.1]) by ns3.fatcity.com (8.12.5/8.12.5) with ESMTP id h8ILU1KG010268 for ; Thu, 18 Sep 2003 14:31:26 -0700 Received: (from root@localhost) by ns3.fatcity.com (8.12.5/8.12.5/Submit) id h8ILPXMm008481 for oracle-l@orafaq.net; Thu, 18 Sep 2003 14:25:35 -0700 Received: by fatcity.com (05-Jun-2003/v1.0g-b73/bab) via fatcity.com id 005D0696; Thu, 18 Sep 2003 14:25:02 -0800 Message-ID: Date: Thu, 18 Sep 2003 14:25:02 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: "Jesse, Rich" Sender: ml-errors@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: "Jesse, Rich" Subject: OCFS is as fast as raw? Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 73; ListGuru (c) 1996-2003 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit After perusing the OOW'03 presentations, I see that Win Coekaerts' presentation says "IO throughput [on OCFS] is equivalent to RAW IO". Has anyone seen this behavior? It's entirely possible (probable!) that I didn't do something correctly, given the bastardization I needed to do (installed on RH9 because AS2.1 won't support our hardware), but I saw OCFS performance about 40-50 times slower than RAW (rough estimate). I didn't implement the OCFS fileutils as I wasn't going to manually do anything with the files. Surely the oracle binary doesn't call dd, cp, and mv directly for it's file management and data I/O, does it? Is it the "comm_voting=1" in the /etc/ocfs.conf file? Or is it more likely to be async IO (my guess)? Or a combo? Anyone with experience on this? Anyone attend Mr C's presentation? Thanks, Rich Rich Jesse System/Database Administrator rjesse@qtiworld.com Quad/Tech Inc, Sussex, WI USA -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jesse, Rich INET: Rich.Jesse@qtiworld.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).