From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fred Blaise Subject: Re: battery life with cpufreq Date: Mon, 19 Sep 2005 11:53:34 +0200 Message-ID: <9cfa1502050919025331a15ad0@mail.gmail.com> References: <9cfa150205091902116057595e@mail.gmail.com> <20050919092448.GA9023@isilmar.linta.de> <9cfa150205091902354d5b4c43@mail.gmail.com> <1127123139.11913.2.camel@nouse.net> <20050919094827.GB26933@isilmar.linta.de> Reply-To: chapeaurouge-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20050919094827.GB26933-JwFqNg2GrOVrgjWwlLH9qw@public.gmane.org> Content-Disposition: inline Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Dominik Brodowski , Timo Hoenig , chapeaurouge-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On 9/19/05, Dominik Brodowski wrote: > Hi, >=20 > On Mon, Sep 19, 2005 at 11:45:38AM +0200, Timo Hoenig wrote: > > > ok.. So the fact that my CPU goes down to 383Mghz instead of the > > > normal 3Ghz is not frequency scaling? (pardon the noob that I am if > > > this question doesn't make sense) > > > > This is frequency scaling. But it has nothing in common with > > throttling. >=20 > No, p4-clockmod is frequency throttling or frequency modulation, but defi= nitely > not scaling. Ok.. well.. speedstep* do not work here (my frequency will remain stuck where it last was). On the other hand, p4_clockmod, i can see in cpuinfo the frequency going up and down. Here are the relevant modules loaded: `--> lsmod=20 [...] =20 speedstep_lib 3940 1 p4_clockmod cpufreq_powersave 1632 0=20 cpufreq_userspace 4348 0=20 cpufreq_ondemand 6140 0 freq_table 4004 1 p4_clockmod [...] So you would be saying that even though I can see the frequency change in cpuinfo, it is kind of "lying" to me? I can feel the difference too, when I use the laptop. It definitly has the speed of a 383Mghz when the cpuinfo shows it at that frequency.. Thanks > Dominik fred > ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php