Abstract: A voltage and frequency scaling system for a processor is provided that may be implemented in dedicated logic or in software. The various voltage and frequency settings for the processor comprise a set of performance settings. The system includes a profiler module that maps each performance setting to a workload range for the processor. The profiler module also maps each workload range to a profiled throughput for the processor. Using a predicated average throughput from the mapping, the voltage and frequency scaling system advantageously selects from the performance settings and commands the processor to operate according to the selected performance setting.

Abstract: The systems and method described herein provide smart power scheduling for an electronic device. A user can specify a desired battery duration for the electronic device. Smart power scheduling can modify operation of the electronic device, when appropriate, so that the desired battery duration is met. The user may, for example, know that she will be unable to charge her smartphone for 10 hours and specify a desired battery duration of 10 hours. If during the 10 hours, the user plays a game on the smartphone that drains the battery too fast to meet the 10-hour desired battery duration, the smartphone can modify its operations, for example, by lowering the graphics resolution, to achieve the user-specified desired battery duration. When smart power scheduling modifies operations, it may limit the impact on the user experience, for example, background tasks may be modified before foreground tasks are modified.

Abstract: A voltage and frequency scaling system for a processor is provided that may be implemented in dedicated logic or in software. The various voltage and frequency settings for the processor comprise a set of performance settings. The system includes a profiler module that maps each performance setting to a workload range for the processor. The profiler module also maps each workload range to a profiled throughput for the processor. Using a predicated average throughput from the mapping, the voltage and frequency scaling system advantageously selects from the performance settings and commands the processor to operate according to the selected performance setting.