This algorithm executes tasks as fast as possible so that the processor can be put into a sleep mode that minimizes leakage current. Race-to-dark ( RTD) is designed for logic with high leakage currents. Operating system software monitors the workload, determines the proper settings for voltage and clock speed, and configures the hardware appropriately. However, the power supply voltage must be kept high enough to provide adequate performance for the current workload. Since power consumption varies quadratically with voltage but gate delay varies only linearly, we can improve the processor's efficiency by running at lower voltages. DVFS is most effective when dynamic power is the dominant power consumption mode. Modern computer systems use a combination of hardware and software to manage the power behavior of the system.ĭynamic voltage and frequency scaling ( DVFS) is widely used to match system power consumption with required performance. Marilyn Wolf, in The Physics of Computing, 2017 5.6.3 Power management
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