Erik Mouw wrote:
Please do not reply to an existing message as a short-cut to post a
message to the list. For an explanation, see
http://www.arm.linux.org.uk/mailinglists/etiquette.php#e2 .
Sorry for that, I just thought this might be the lazy way...won't happen
again!
On Mon, Jul 23, 2007 at 11:51:43PM +0200, Peter Ganzhorn wrote:
in order to get a temporary fileserver running at home, I "reactivated" an
old Pentium III on a i815-based board.
I have one running as a personal video recorder (MythTV), but it gets a
bit rusty so it's due to be replaced by a modern core2 duo machine.
Combined with a gigabit NIC this box works perfectly as a file server, but
I wondered if there is a way to reduce the power consumption of this box
when running.
Even for earlier Intel chipsets (e.g. the 440BX) there are CPUfreq drivers
available in the kernel, but I wasn't able to find any driver suitable for
the i815.
Is there a CPUfreq driver that can save me some power on this box?
I'm afraid not. For frequency and voltage scaling to work, both the CPU
and the chipset have to support it. IIRC only some mobile PIII support
scaling, and only when the chipset supports it as well.
AFAIK it does not support C-states at all, so this is the only way I can
think of to save some power.
I guess it will support C states, my equally old Athlon 1.6 GHz also
supports it. Even if it doesn't support C states you can still save
power by letting it idle as much as possible.
Erik
Thanks for the hints, I'll check if it supports C-states - combined with
dynticks this already helps a lot I guess.
Peter
_______________________________________________
Power mailing list
[email protected]
http://www.bughost.org/mailman/listinfo/power
