Power saving feature in Genode and Fiasco.OC

[Norman Feske]

Hi Steve,

thanks for your nice words! :-)

> As I titled, I'm wondering if Genode and Fiasco.OC have power saving
> features, especially on a Panda board.
> For example, reducing voltage, lowering frequency, and so on.
> 
> I heard that Genode and Fiasco.OC with L4Linux consume more power than a
> native linux in the idle state (on the Panda board).

On Genode, the current drivers for the Pandaboard comprise USB (for HID
and networking), HDMI, and SD-card. There is currently no driver for the
dynamic voltage and frequency scaling (DVFS) feature of the OMAP4 SoC.
So I would just expect a higher power consumption of Genode compared to
native Linux, which comes with a DVFS driver.

That said, I see no real show stopper that would speak against
implementing such a driver. The DVFS driver would run as normal Genode
process like any of the other drivers.

Are you interested in having a closer look on this topic? If yes, I
would be happy to discuss possible approaches about how to integrate
power saving features with the Genode architecture.

Cheers
Norman

-- 
Dr.-Ing. Norman Feske
Genode Labs

http://www.genode-labs.com · http://genode.org

Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden
Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth