Hi Gerry, > I think this power saving mechanism has little impacts on VM > because it will be enabled only when system is idle and no other effects > other than reduced memory bandwidth will be visible to OS. > This sounds interesting. It sounds like this is something that the OS might want to know about (in terms of observing and controlling it being enabled/disabled) since there could be a performance impact...is that right? For example, to strike a good balance between power efficiency and performance (bandwidth), the OS could enable the feature only when it becomes idle...of it could could enable the feature only for memory that isn't (or is lightly) utilized. Might that be a consideration?
Thanks! -Eric
