From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760111AbYD3BFz (ORCPT ); Tue, 29 Apr 2008 21:05:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756215AbYD3BFq (ORCPT ); Tue, 29 Apr 2008 21:05:46 -0400 Received: from hs-out-0708.google.com ([64.233.178.242]:12573 "EHLO hs-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756212AbYD3BFp (ORCPT ); Tue, 29 Apr 2008 21:05:45 -0400 Message-ID: <4817C5C9.5030204@larces.uece.br> Date: Tue, 29 Apr 2008 22:05:13 -0300 From: Sergio Luis User-Agent: Thunderbird 2.0.0.6 (X11/20070728) MIME-Version: 1.0 To: Ingo Molnar CC: Glauber Costa , Ken Moffat , Bart Van Assche , LKML Subject: Re: 2.6.25 slow boot/reboot References: <48141111.7010605@larces.uece.br> <20080427235554.GA28344@deepthought> <48152747.4030107@larces.uece.br> <4815DCEF.3000602@redhat.com> <430c4fa50804280735o3d1c3b9cg687f7d374dafbdec@mail.gmail.com> <48166CA1.1070000@redhat.com> <4816BDAD.3000906@larces.uece.br> <481713E3.1050007@redhat.com> <20080429142819.GF26461@elte.hu> In-Reply-To: <20080429142819.GF26461@elte.hu> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > * Glauber Costa wrote: > >> [ 1.375711] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ >> sharing enabled >> [ 4.399907] floppy0: no floppy controllers found >> >> a 90-second delay is not what's happening, or at least, not what the >> kernel is seeing. So my bet would be something clock-related. Probably >> the system's clocksource is not running the time correctly, which is >> causing system events to be delayed. I fail to see, however, how does >> the patch you bisected to influences this. Ingo, do you have any idea? > > the first thing to check, does latest x86.git work fine: > nope, it doesn't work fine, but gives me the same issue (I had to apply the scsi patch in http://lkml.org/lkml/2008/4/27/309 in order to make it boot, though). > http://people.redhat.com/mingo/x86.git/README > > ? We've got fixes queued up - in particular one could result in 'slow' > systems by virtue of denying an ioremap(): > > Subject: revert: "x86: ioremap(), extend check to all RAM pages" > > maybe the bisection went haywire. > I tried re-bisecting using now 2.6.25 as my initial good kernel, but in the 2nd or 3r iteration I start having compilation problems like such as -- ld:fs:afs/cell.o: file format not recognized; treating as linker script ld:fs/afs/cell.o:1: syntax error The same problem happens with fs/autofs/inode.o and crypto/hmac.o -- and it stopped the bisection process from going forward. I am using binutils 2.17.50.0.17 (slackware 12 here) and also tried the latest binutils cvs, but it gives me the same error there. Any suggestions? thanks, -sergio > Or the secondary core booted up in such a sucky way that it causes such > massive slowdowns? Perhaps we are flooding the system with local APIC > timer interrupts or other interrupts? > > Ingo