Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932181AbVJMWag (ORCPT ); Thu, 13 Oct 2005 18:30:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751118AbVJMWag (ORCPT ); Thu, 13 Oct 2005 18:30:36 -0400 Received: from smtp1.Stanford.EDU ([171.67.16.123]:26799 "EHLO smtp1.Stanford.EDU") by vger.kernel.org with ESMTP id S1751116AbVJMWaf (ORCPT ); Thu, 13 Oct 2005 18:30:35 -0400 Subject: Re: 2.6.14-rc4-rt1 From: Fernando Lopez-Lezcano To: Ingo Molnar Cc: nando@ccrma.Stanford.EDU, linux-kernel@vger.kernel.org, Thomas Gleixner , Steven Rostedt , dwalker@mvista.com, david singleton In-Reply-To: <20051012071037.GA19018@elte.hu> References: <20051011111454.GA15504@elte.hu> <1129064151.5324.6.camel@cmn3.stanford.edu> <20051012061455.GA16586@elte.hu> <20051012071037.GA19018@elte.hu> Content-Type: text/plain Date: Thu, 13 Oct 2005 15:29:55 -0700 Message-Id: <1129242595.4623.14.camel@cmn3.stanford.edu> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2422 Lines: 41 On Wed, 2005-10-12 at 09:10 +0200, Ingo Molnar wrote: > another thing: might be worth trying PREEMPT_RT too, maybe it makes a > difference. On "depmod -a" I'm getting: WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/jffs2/jffs2.ko needs unknown symbol __down_read WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/jffs2/jffs2.ko needs unknown symbol __up_write WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/jffs2/jffs2.ko needs unknown symbol __up_read WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/jffs2/jffs2.ko needs unknown symbol __down_write WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/jffs2/jffs2.ko needs unknown symbol compat_init_rwsem WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __down_read WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __down_write_trylock WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __up_write WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __up_read WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __downgrade_write WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __down_write WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol compat_init_rwsem WARNING: /lib/modules/2.6.13-0.11.rdt.rhfc4.ccrmasmp/kernel/fs/xfs/xfs.ko needs unknown symbol __down_read_trylock I'll report after I try to boot into it. > Also, i noticed an unrelated .config thing: while you have > PREEMPT_DESKTOP, PREEMPT_BKL and irq/softirq threading turned on, you > dont have PREEMPT_RCU enabled. PREEMPT_RCU is pretty useful, it can get > rid of a number of latency sources. Might be worth a try for your > kernel. I tried PREEMPT_RCU=y and then HIGH_RES_TIMERS=y with no effects. I also turned off ntpd at Thomas's request (no change). I could not boot the up version of the kernel, it hangs early, I'll try to see why (weird). -- Fernando - 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/