From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932257AbWJCO3E (ORCPT ); Tue, 3 Oct 2006 10:29:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932258AbWJCO3E (ORCPT ); Tue, 3 Oct 2006 10:29:04 -0400 Received: from wr-out-0506.google.com ([64.233.184.227]:30754 "EHLO wr-out-0506.google.com") by vger.kernel.org with ESMTP id S932257AbWJCO3D (ORCPT ); Tue, 3 Oct 2006 10:29:03 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=Kdw98Yrf8DuGtJgnpORDGBOlA7TX3/uxKTiJJegCamVs9BbZGU2fhixuJKGDWWTb3TFymzbU1FvauhvPXInhbQG5YXRHCm6SDVgnzah8br+SPNeoqwXvhU8/sSRd9Q0B/2or+X/8WRq0m0l7JJxeI7rUafsbJcr04xS35hhGrzY= Message-ID: <20f65d530610030729o42658bd6hcc204f8deac4a33e@mail.gmail.com> Date: Wed, 4 Oct 2006 03:29:02 +1300 From: "Keith Chew" To: linux-kernel Subject: BIOS THRM-Throttling and driver timings MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi We have a motherboard that has Thermal Throttling in the BIOS (which we cannot disable). This causes the CPU usage to go up and down when the CPU temperature reaches (and stays around) the Throttling temperature point. What we would like to know is whether this will affect the timings in drivers, eg the wireless drivers we are using. What can we check in drivers' code that will tell us that its operations may be affected the throttling? In the past few days, we noticed that some of the linux units we deployed freezes after deveral hours of operation, we are now trying to reproduce the problem in our test environment. Some insight on the affect of throttling will help us narrow down the search. Regards Keith