From oracle-l-bounce@freelists.org Tue Apr 27 19:03:10 2004 Return-Path: Received: from air189.startdedicated.com (root@localhost) by orafaq.com (8.11.6/8.11.6) with ESMTP id i3S02sM20352 for ; Tue, 27 Apr 2004 19:03:04 -0500 X-ClientAddr: 206.53.239.180 Received: from turing.freelists.org (freelists-180.iquest.net [206.53.239.180]) by air189.startdedicated.com (8.11.6/8.11.6) with ESMTP id i3S02i620338 for ; Tue, 27 Apr 2004 19:02:54 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 40A2672CB6D; Tue, 27 Apr 2004 18:54:48 -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 26800-33; Tue, 27 Apr 2004 18:54:48 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 88E4772C89F; Tue, 27 Apr 2004 18:54:47 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Tue, 27 Apr 2004 18:53:32 -0500 (EST) X-Original-To: oracle-l@freelists.org Delivered-To: oracle-l@freelists.org Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 573C272CA30 for ; Tue, 27 Apr 2004 18:53:32 -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 26774-05 for ; Tue, 27 Apr 2004 18:53:32 -0500 (EST) Received: from smtp.vip.163.com (smtp.vip.163.com [202.106.168.106]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id A051C72CA0B for ; Tue, 27 Apr 2004 18:53:31 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by smtp.vip.163.com (Postfix) with SMTP id 0B800504F for ; Wed, 28 Apr 2004 08:06:07 +0800 (CST) Received: from LSHACHZHU (unknown [211.95.57.113]) by 202.106.168.106 (Coremail:vip.163.com) with SMTP id tgEAAGz1jkBlKzlx.1 for ; Wed, 28 Apr 2004 08:06:07 +0800 (CST) X-TEBIE-Originating-IP: [211.95.57.113] Message-ID: <006301c42cb4$9949e9f0$71395fd3@corp.ebay.com> From: "zhu chao" To: References: <358728A276824E419580403633AABFD0031E1268@INDYSMAIL03.am.thmulti.com> <20040427192826.GA1119@mladen.wangtrading.com> Subject: Re: Anyone running JFS2 Concurrent I/O with 9i on AIX 5.2? Date: Wed, 28 Apr 2004 08:06:03 +0800 MIME-Version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1213 X-Virus-Scanned: by amavisd-new at freelists.org X-archive-position: 3896 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: chao_ping@vip.163.com Precedence: normal Reply-To: oracle-l@freelists.org X-list: oracle-l X-Virus-Scanned: by amavisd-new at freelists.org CIO is a feature of AIX 5.2 JFS2. There is a whitepaper talking about this feature on IBM site. you can search for it. According to that paper, performance is near that of raw device. I have saw some patch for CIO from IBM. As it is a new feature you'd better test it carefully before put it into production. Regards Zhu Chao. ----- Original Message ----- From: "Mladen Gogala" To: Sent: Wednesday, April 28, 2004 3:28 AM Subject: Re: Anyone running JFS2 Concurrent I/O with 9i on AIX 5.2? > What is JFS2? What is Concurrent I/O? Do you have a URL? I'm using JFS on Linux > and I'm a fan, but I've never heard of JFS2 and concurrent I/O? What is the difference > between JFS and JFS2, besides additional number at the end of the name? > > > On 04/27/2004 11:37:44 AM, Thomas Jeff wrote: > > Supposedly, the performance is much better due to alleviating the > > inode write serialization issue. > > Does Oracle enforce serialization if Concurrent I/O is turned on? > > > > -------------------------------------------- > > Jeffery D Thomas > > DBA > > Thomson Information Services > > Thomson, Inc. > > > > Email: jeff.thomas@thomson.net > > > > Indy DBA Master Documentation available at: > > http://gkmqp.tce.com/tis_dba > > -------------------------------------------- > > > > > > > > ---------------------------------------------------------------- > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > ---------------------------------------------------------------- > > To unsubscribe send email to: oracle-l-request@freelists.org > > put 'unsubscribe' in the subject line. > > -- > > Archives are at http://www.freelists.org/archives/oracle-l/ > > FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html > > ----------------------------------------------------------------- > > > > -- > Mladen Gogala > Oracle DBA > > > > Note: > This message is for the named person's use only. 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