Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761283AbXEKOVV (ORCPT ); Fri, 11 May 2007 10:21:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756413AbXEKOVP (ORCPT ); Fri, 11 May 2007 10:21:15 -0400 Received: from svr68.ehostpros.com ([67.15.48.48]:40947 "EHLO svr68.ehostpros.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754835AbXEKOVO (ORCPT ); Fri, 11 May 2007 10:21:14 -0400 Subject: Re: statistics of filesystem-journal usage From: Kalpak Shah To: Folkert van Heusden Cc: linux-kernel@vger.kernel.org In-Reply-To: <20070511140004.GD6261@vanheusden.com> References: <20070511140004.GD6261@vanheusden.com> Content-Type: text/plain Date: Fri, 11 May 2007 19:54:26 +0530 Message-Id: <1178893466.6016.5.camel@garfield> Mime-Version: 1.0 X-Mailer: Evolution 2.8.0 (2.8.0-7.fc6) Content-Transfer-Encoding: 7bit X-Antivirus-Scanner: Clean mail though you should still use an Antivirus X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - svr68.ehostpros.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - linsyssoft.com X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 860 Lines: 26 On Fri, 2007-05-11 at 16:00 +0200, Folkert van Heusden wrote: > Hi, > > Maybe it is a nice idea to export statistics on the usage of a journal > of a filesystem as well. That way one can more easy see if it would help > to put a journal on an other harddisk. There is a patch posted on linux-ext4 which maintains the journal statistics such as transaction sizes and their lifetimes. These stats are provided through procfs and can only be used with ext4 since ext2/3 still use the jbd layer. You can see the patch here: http://lists.openwall.net/linux-ext4/2007/04/02/6 - Kalpak. > > > Folkert van Heusden > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/