Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932227AbWEWO4X (ORCPT ); Tue, 23 May 2006 10:56:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932236AbWEWO4X (ORCPT ); Tue, 23 May 2006 10:56:23 -0400 Received: from odin2.bull.net ([129.184.85.11]:14316 "EHLO odin2.bull.net") by vger.kernel.org with ESMTP id S932227AbWEWO4W convert rfc822-to-8bit (ORCPT ); Tue, 23 May 2006 10:56:22 -0400 From: "Serge Noiraud" To: Daniel Walker Subject: Re: RT patch + LTTng Date: Tue, 23 May 2006 16:57:44 +0200 User-Agent: KMail/1.7.1 Cc: Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org References: <200605221742.29566.Serge.Noiraud@bull.net> <1148393197.3535.85.camel@c-67-180-134-207.hsd1.ca.comcast.net> In-Reply-To: <1148393197.3535.85.camel@c-67-180-134-207.hsd1.ca.comcast.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200605231657.45363.Serge.Noiraud@bull.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2725 Lines: 84 mardi 23 Mai 2006 16:06, Daniel Walker wrote/a ?crit?: > On Mon, 2006-05-22 at 17:42 +0200, Serge Noiraud wrote: > > > ltt_stat-7809 0Dnh3 0us : __trace_start_sched_wakeup (try_to_wake_up) > > ltt_stat-7809 0Dnh3 0us : __trace_start_sched_wakeup <<...>-3> (0 0) > > > Do you also have preempt and interrupt latency turned on ? In addition > to wakeup latency .. Here is all I configured : ... CONFIG_PREEMPT_RT=y CONFIG_PREEMPT=y CONFIG_PREEMPT_SOFTIRQS=y CONFIG_PREEMPT_HARDIRQS=y CONFIG_PREEMPT_BKL=y # CONFIG_CLASSIC_RCU is not set CONFIG_PREEMPT_RCU=y CONFIG_RCU_STATS=y ... CONFIG_DEBUG_PREEMPT=y CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_PI_LIST=y CONFIG_RT_MUTEX_TESTER=y CONFIG_WAKEUP_TIMING=y CONFIG_WAKEUP_LATENCY_HIST=y CONFIG_PREEMPT_TRACE=y CONFIG_CRITICAL_PREEMPT_TIMING=y CONFIG_PREEMPT_OFF_HIST=y CONFIG_CRITICAL_IRQSOFF_TIMING=y CONFIG_INTERRUPT_OFF_HIST=y CONFIG_CRITICAL_TIMING=y CONFIG_DEBUG_TRACE_IRQFLAGS=y CONFIG_LATENCY_TIMING=y CONFIG_CRITICAL_LATENCY_HIST=y CONFIG_LATENCY_HIST=y CONFIG_LATENCY_TRACE=y ... If you want to known what I have in : /proc/latency_hist/preempt_off_latency and in /proc/latency_hist/interrupt_off_latency I suppressed all lines with a zero at the end. There are no infos in these files. -sh-2.05b# more /proc/latency_hist/preempt_off_latency/CPU0 | grep -v " 0$" #Minimum latency: 4294967295 microseconds. #Average latency: 0 microseconds. #Maximum latency: 0 microseconds. #Total samples: 0 #There are 0 samples greater or equal than 10240 microseconds #usecs samples -sh-2.05b# more /proc/latency_hist/preempt_off_latency/CPU1 | grep -v " 0$" #Minimum latency: 4294967295 microseconds. #Average latency: 0 microseconds. #Maximum latency: 0 microseconds. #Total samples: 0 #There are 0 samples greater or equal than 10240 microseconds #usecs samples -sh-2.05b# more /proc/latency_hist/interrupt_off_latency/CPU0 | grep -v " 0$" #Minimum latency: 4294967295 microseconds. #Average latency: 0 microseconds. #Maximum latency: 0 microseconds. #Total samples: 0 #There are 0 samples greater or equal than 10240 microseconds #usecs samples -sh-2.05b# more /proc/latency_hist/interrupt_off_latency/CPU1 | grep -v " 0$" #Minimum latency: 4294967295 microseconds. #Average latency: 0 microseconds. #Maximum latency: 0 microseconds. #Total samples: 0 #There are 0 samples greater or equal than 10240 microseconds #usecs samples -sh-2.05b# > > Daniel -- Serge Noiraud - 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/