From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nate Lawson Subject: Re: Re: power is always C2 on toshiba A40 261 Date: Wed, 23 Jun 2004 23:32:50 -0700 (PDT) Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040623233202.W90370@root.org> References: <20040623181434.44916.qmail@web90003.mail.scd.yahoo.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Return-path: In-Reply-To: <20040623181434.44916.qmail-uo4e3NHVv3LcEUl5EaY66YglqE1Y4D90QQ4Iyu8u01E@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Olive Esseret Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Wed, 23 Jun 2004, Olive Esseret wrote: > --- Stefan Seyfried > wrote: > > On Wed, Jun 23, 2004 at 05:25:35AM -0700, Olive > > Esseret wrote: > > > Hello, > > > > > The content of the file > > > > > > /proc/acpi/processor/CPU0/power > > > (see attached file power.txt.bz2) > > > > (it is a bit cumbersome attaching such small files > > compressed :-) > > > > > shows that I am *always* in C2 sate. I see also > > that I > > > > you are probably using a USB mouse on a uhci-hcd > > controller. > > Unplug the mouse and it will enter C3. > > Thank you, you are entirely right. But my question was > more about why I am never C1 even whan I use nearly > 100% of CPU (I use this laptop mainly with the AC > adaptator and I do not want to loose performance) Maybe you're lucky and your C2 has such a low latency that it's considered just as fast as C1. The T40 specifies a 1 microsecond latency for C2 (same as C1). -Nate ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com