From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750918AbWFAMzG (ORCPT ); Thu, 1 Jun 2006 08:55:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750943AbWFAMzG (ORCPT ); Thu, 1 Jun 2006 08:55:06 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:23687 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1750918AbWFAMzF (ORCPT ); Thu, 1 Jun 2006 08:55:05 -0400 Subject: Re: 2.6.17-rc5-mm2 md cause BUGs, and readahead speedup From: Arjan van de Ven To: Helge Hafting Cc: Andrew Morton , linux-kernel@vger.kernel.org In-Reply-To: <447EDF09.5040807@aitel.hist.no> References: <20060601014806.e86b3cc0.akpm@osdl.org> <447EDF09.5040807@aitel.hist.no> Content-Type: text/plain Date: Thu, 01 Jun 2006 14:54:59 +0200 Message-Id: <1149166500.3115.51.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2006-06-01 at 14:35 +0200, Helge Hafting wrote: > The good stuff first, bootup went from 55s to 43s according to > bootchart. :-) > Probably the readahead stuff. > > I got some BUG messages in dmesg though, they > seem related to md initialization: > > Freeing unused kernel memory: 236k freed > md: Autodetecting RAID arrays. > BUG: warning at fs/block_dev.c:944/do_open() we're working on fixing this already; the warning appears to be an over-eager assert but we need to validate that some more first