Re: Saving battery power
On Fri, Mar 09, 2007 at 09:52:20PM +0100, Thorsten Schmidt wrote:
> Hello,
>
> Am Freitag, 9. März 2007 21:41 schrieb Mike Hommey:
> > On Fri, Mar 09, 2007 at 09:25:46PM +0100, Thorsten Schmidt
> <meine_mailings@web.de> wrote:
> > > Hello,
> > >
> > > Am Freitag, 9. März 2007 20:42 schrieb Mike Hommey:
> > > > On Fri, Mar 09, 2007 at 08:32:21PM +0100, Thorsten Schmidt
> > >
> > > <meine_mailings@web.de> wrote:
> > > > > Hello at all,
> > > > >
> > > > > for some time I've been trying to reduce my laptop's power
> > > > > consumption (while running on battery power) on my Fujitsu-Siemens
> > > > > Lifebook C1320 with Debian etch.
> > > > > - I echo powersave to
> > > > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor - I installed
> > > > > laptop-mode in order to shut down my harddrive if it is unused. - I
> > > > > don't use swap, /tmp/ is a ramdisk-mount and /var/tmp links to /tmp,
> > > > > (I've 1 GB RAM)
> > > > > Thus my hd is barely used and my CPU reaches C3.
> > > > >
> > > > > But for some reason, Windows is more efficient in power saving. (3,5h
> > > > > vs. 4,5h battery life while surfing wireless).
> > > > > Is there anything else I can do to save battery power?
> > > >
> > > > Basically, no, except waiting for Linux ACPI support to get better.
>
> ok, ehm.
> Is this about to happen soon?
> Would switching from vanilla (2.6.20.1) to -mm be an option?
probably using CONFIG_NO_HZ=y (yes, available in -mm), but you'll hardly
get one more hour.
Give it a shot.
--
mattia
:wq!
Reply to: