On Tue, 17 Feb 2009 00:19:38 +0100
"Rafael J. Wysocki" [off-list ref] wrote:
quoted
In addition, in hardware there does seem to be the trend where idle
and suspend are converging (just look at the OLPC)... with
chipsets powering down all unused pieces, and cpus in idle taking
basically no power, there no longer is much of a difference in
reality between suspend and good-idle...
This, again, seems to be a bit x86-centric. :-)
actually absolutely not. To the contrary. It is, as you said, the
embedded systems that have, and increasingly get, finer grained per
device controls. (x86 embedded and otherwise). The more fine grained
control you have, the less a system wide state will give you in
additional power savings. This is pretty much the industry trend for
all power sensitive systems.
Android might be using last years hardware. I'm not saying we shouldn't
support that, but we need to be careful to not design the system only
looking backwards.
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org