Received: with ECARTIS (v1.0.0; list linux-xfs); Wed, 11 May 2005 07:47:37 -0700 (PDT) Received: from dmzraw2.extranet.tce.com (dmzraw2.extranet.tce.com [157.254.234.138]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id j4BElJOv009746 for ; Wed, 11 May 2005 07:47:19 -0700 Received: from smtprelay.indy.tce.com (ismtprelay.indy.tce.com [157.254.96.114]) by dmzraw2.extranet.tce.com (8.12.5/8.12.5) with ESMTP id j4BEkseB029947 for ; Wed, 11 May 2005 14:46:54 GMT Received: from boulsmailbh02.eu.thmulti.com (localhost [127.0.0.1]) by smtprelay.indy.tce.com (8.9.3/8.9.1) with ESMTP id OAA26583 for ; Wed, 11 May 2005 14:46:52 GMT Received: from wdtssmail01.eu.thmulti.com ([141.11.216.71]) by boulsmailbh02.eu.thmulti.com with Microsoft SMTPSVC(5.0.2195.6713); Wed, 11 May 2005 16:46:34 +0200 MIME-Version: 1.0 X-MimeOLE: Produced By Microsoft Exchange V6.0.6603.0 Subject: Every new file goes into a new ag Date: Wed, 11 May 2005 16:46:33 +0200 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Every new file goes into a new ag Thread-Index: AcVWODmDQvoNCIe4T0y/OrhOzLCmAQ== From: "Bub Thomas" To: Cc: "Braehler Uwe" , "Lindenkreuz Morris" , "Waldschmidt Stefan" X-OriginalArrivalTime: 11 May 2005 14:46:34.0759 (UTC) FILETIME=[3A621170:01C55638] Content-Type: text/plain Content-Disposition: inline Content-Transfer-Encoding: 7bit X-archive-position: 5190 X-ecartis-version: Ecartis v1.0.0 Sender: linux-xfs-bounce@oss.sgi.com Errors-to: linux-xfs-bounce@oss.sgi.com X-original-sender: thomas.bub@thomson.net Precedence: bulk X-list: linux-xfs Content-Length: 1029 Lines: 32 Hi there, I just got XFS running under RedHat EL 3.0. Since I need high bandwidth for media playout, where in our case each and every frame of a film image sequence is a new file, I need file sequences being physically close to each other. I'm struggling with the fact that consecutive files on a new filesystem don't get consecutive inode numbers. It seems that every new file ends up in a new ag. Thus the read performance for consecutive files is very poor I tried it with two different kernels which are 2.4.21-27.0.2.EL.sgi9.i386 and 2.4.21-15.0.4.EL.sgi3.i38. with both the effect is the same. My filesystem is located on a JBOD array on 14 FC-2 disks with less then 2 TByte and the kernel config CONFIG_LBD not set. The volume on the JBOD I use is made with LVM. Any help welcome. Thomas Bub _____________________________________ Thomas Bub Thomson grass valley Brunnenweg 9 D-64331 Weiterstadt Phone: +49-(0)-6150-104-147 Fax: +49-(0)-6150-104-656 E-Mail: Thomas.Bub@Thomson.net [[HTML alternate version deleted]]