From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 28 Aug 2001 06:41:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 28 Aug 2001 06:41:35 -0400 Received: from motgate.mot.com ([129.188.136.100]:23741 "EHLO motgate.mot.com") by vger.kernel.org with ESMTP id ; Tue, 28 Aug 2001 06:41:23 -0400 Message-Id: <3B8B755F.D6317A9A@crm.mot.com> Date: Tue, 28 Aug 2001 12:41:35 +0200 From: Emmanuel Varagnat Reply-To: Emmanuel Varagnat-AEV010 Organization: Centre de Recherche de Motorola - Paris X-Mailer: Mozilla 4.7 [en] (WinNT; I) X-Accept-Language: en MIME-Version: 1.0 To: Andi Kleen Cc: Hans Reiser , linux-kernel@vger.kernel.org Subject: Re: Journal Filesystem Comparison on Netbench In-Reply-To: <3B8A6122.3C784F2D@us.ibm.com.suse.lists.linux.kernel> <3B8AA7B9.8EB836FF@namesys.com.suse.lists.linux.kernel> 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 Andi Kleen wrote: > > It does not really look like a locking problem. If you look at the profiling > logs it is pretty clear that the problem is the algorithm used in > bitmap.c:find_forward. find_forward and reiserfs_in_journal > ... > journaled blocks set also, to quickly skip them for the common case. I'm very interested in the way you did profiling. Did you compile the kernel with profiling options (gprof ?) ? If so, where the profiling information file is saved ? Thanks -Manu