On Mon, Jun 30, 2008 at 09:10:28AM +0200, Adam Tkac wrote: > On Fri, Jun 27, 2008 at 05:13:24PM +0100, Richard Hughes wrote: > > * remove CONFIG_CPU_FREQ_GOV_POWERSAVE -- ondemand automatically > > throttles down to lowest, and is just a hardcoded state > > I don't think removal of powersave governor is good idea. Generally > ondemand governor does great job but in some cases doesn't. For > example when I play some films in mplayer ondemand sets frequency to > max which is not needed, of course. The same can be achieved by altering /sys/devices/system/cpu/*/cpufreq/scaling_max_freq, but it's still likely that you're consuming less power when ondemand is setting your frequency to max. An idle fast processor consumes less power than an active slow one. > Powersave governor is also good in case that you have bad fan in your > laptop and you are going to compile some big source. Without powersave > it is not possible (yes, it really happens :) ) http://lkml.org/lkml/2008/6/16/100 > I think we should preserve ondemand and powersave governors (and > potentialy others as Dave Jones wrote in this thread). Please don't > drop them in favour of your project which might be generally better but > I believe there are cases where current governors are better. I'm open to indications as to what these are :) Powersave is semantically identical to ondemand with scaling_max_freq altered. Performance is semantically identical to ondemand with scaling_min_freq altered. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
