Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266663AbUJPTgs (ORCPT ); Sat, 16 Oct 2004 15:36:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268800AbUJPTgp (ORCPT ); Sat, 16 Oct 2004 15:36:45 -0400 Received: from mx1.elte.hu ([157.181.1.137]:37295 "EHLO mx1.elte.hu") by vger.kernel.org with ESMTP id S266663AbUJPTfH (ORCPT ); Sat, 16 Oct 2004 15:35:07 -0400 Date: Sat, 16 Oct 2004 21:36:26 +0200 From: Ingo Molnar To: Adam Heath Cc: linux-kernel@vger.kernel.org Subject: Re: [patch] Real-Time Preemption, -VP-2.6.9-rc4-mm1-U4 Message-ID: <20041016193626.GB10626@elte.hu> References: <20041012091501.GA18562@elte.hu> <20041012123318.GA2102@elte.hu> <20041012195424.GA3961@elte.hu> <20041013061518.GA1083@elte.hu> <20041014002433.GA19399@elte.hu> <20041014143131.GA20258@elte.hu> <20041014234202.GA26207@elte.hu> <20041015102633.GA20132@elte.hu> <20041016153344.GA16766@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1051 Lines: 30 * Adam Heath wrote: > > i have released the -U4 PREEMPT_REALTIME patch: > > > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc4-mm1-U4 > > > > this is a fixes-only release, and it is still experimental code. > > Few stack dumps now. these are normal, they are the PREEMPT_TIMING traces which get printed every time the kernel measures a new latency maximum. The stack dumps are done to make it easier to identify which place too that long of a delay and why. (if LATENCY_TRACE is enabled too then the last latency and its trace can also be found in /proc/latency_trace.) after bootup it makes sense to reset the maximum: echo 10 > /proc/sys/kernel/preempt_max_latency because during bootup there are a number of latencies that are one-time only. Ingo - 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/