From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Engelhardt Subject: Re: system freezes for 0.2 to 0.5 seconds when reading /proc/acpi/thermal_zone/THRM/temperature Date: Thu, 28 Jul 2005 08:49:38 +0200 Message-ID: <20050728084938.480b46d1@localhost> References: <20050728002244.5163ac4a@localhost> <20050727161605.5711fcf7.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20050727161605.5711fcf7.akpm@osdl.org> Sender: linux-kernel-owner@vger.kernel.org To: Andrew Morton Cc: linux-kernel@vger.kernel.org, acpi-devel@lists.sourceforge.net List-Id: linux-acpi@vger.kernel.org Hello, On Wed, 27 Jul 2005 16:16:05 -0700 Andrew Morton wrote: > Florian Engelhardt wrote: > > > > Hello, > > > > first of all, sorry for the long headline. > > second: > > Every time, i try to do the following: > > cat /proc/acpi/thermal_zone/THRM/temperature > > the whole system looks up for a short period of time (something > > about 0.5s). realy everything, video and audio encoding, mouse and > > keyboard input, firefox playing a flash animation, ... > > I am also getting the following: > > Losing some ticks... checking if CPU frequency changed. > > > > maybe these two things are belonging to each other. > > > > I am using a 2.6.12-rc3-mm1 kernel on a amd64 with a nvidia nforce4 > > mainboard. > > It might help if you were to generate a kernel profile: > > readprofile -r returns: /proc/profile: No such file or directory do i have to activate something special during kernel configuration? btw: i saw that mm2 is available. Are there any changes in it, which could solve this problem? flo > for i in $(seq 10) > do > cat /proc/acpi/thermal_zone/THRM/temperature > done > readprofile -n -v -m /boot/System.map | sort -n +2 | tail -40 > > -- "I may have invented it, but Bill made it famous" David Bradley, who invented the (in)famous ctrl-alt-del key combination