From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Renninger Subject: Re: CPU throttled down to 800 after 15-30mins Date: Mon, 7 Feb 2011 20:55:38 +0100 Message-ID: <201102072055.38707.trenn@suse.de> References: <4D4DAB6A.6090807@gmail.com> <20110206044123.GB2703@kamineko.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110206044123.GB2703@kamineko.org> Sender: cpufreq-owner@vger.kernel.org List-ID: Content-Type: Text/Plain; charset="us-ascii" To: Mattia Dongili Cc: J Webster , cpufreq@vger.kernel.org On Sunday 06 February 2011 05:41:23 Mattia Dongili wrote: > 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. Also check whether your BIOS is the reason, if you get 800000 here: /sys/devices/system/cpu/cpu0/cpufreq/bios_limit you should check your BIOS settings. Thomas