Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 16 Feb 2003 20:09:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 16 Feb 2003 20:09:47 -0500 Received: from e34.co.us.ibm.com ([32.97.110.132]:34766 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id ; Sun, 16 Feb 2003 20:09:47 -0500 Message-ID: <3E503871.8040107@us.ibm.com> Date: Sun, 16 Feb 2003 17:18:41 -0800 From: Dave Hansen User-Agent: Mozilla/5.0 (compatible; MSIE5.5; Windows 98; X-Accept-Language: en MIME-Version: 1.0 To: "Martin J. Bligh" CC: linux-kernel , lse-tech , Andrew Morton Subject: Re: Performance of ext3 on large systems References: <66390000.1045442686@[10.10.2.4]> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 901 Lines: 29 Martin J. Bligh wrote: > OK, so I guess we all know that ext3 doesn't scale well. But by > accident, I have some numbers on exactly how bad it really is: > > Kernbench-2: (make -j N vmlinux, where N = 2 x num_cpus) > Elapsed User System CPU > 2.5.61-mjb0.1-ext3 48.47 564.13 143.16 1458.67 > 2.5.61-mjb0.1-ext2 46.06 563.04 115.36 1472.33 > > (look at system time ... eeek!) > > diffprofile (+ is worse with ext3, - better) > > 12702 .text.lock.inode # grep -c lock_kernel fs/ext3/inode.c 35 -- Dave Hansen haveblue@us.ibm.com - 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/