From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mattia Dongili Subject: Re: CPU throttled down to 800 after 15-30mins Date: Sun, 6 Feb 2011 13:41:23 +0900 Message-ID: <20110206044123.GB2703@kamineko.org> References: <4D4DAB6A.6090807@gmail.com> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <4D4DAB6A.6090807@gmail.com> Sender: cpufreq-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: J Webster Cc: cpufreq@vger.kernel.org Note that this is a kernel development related list, if your problem is specific to cpufreqd (note the "d" for deamon, a userspace application) please write/reply to me only or to cpufreqd related mailing lists. On Sat, Feb 05, 2011 at 08:56:26PM +0100, J Webster wrote: > My laptop is an Inpsiron 9300, which should be able to go up to 1.73GHz. > I am having an issue whereby when I first turn the computer on, > ondemand is selected and the speed moves between 800 and 1.73 > successfully. > For no apparent reason, after 15mins it is throttled back to 800 and > I cannot change it back. > I tired manually editing the scaling_max_freq file to 1733000 but > when I go back to view it it has changed to 800000 again! > I thought it might be this issue: > ## > # Special Rules > ## > # CPU Too hot! > [Rule] > name=CPU Too Hot > acpi_temperature=55-100 > cpu_interval=50-100 > profile=Performance Low > [/Rule] > > So I changed it from 70-100 but on the last try the cpu did not > reach 70 and it still throttled it back to 800. Try to increase cpufreqd verbosity, it will tell you which and why a specific rule was selected. From there you can work on modifying your rules to better match your usage. Regards, -- mattia :wq!