the energy efficiency in edge computing environments can be achieved according to the same principle as is achieved in mobile devices - especially cell phones (Handys). This means that load-dependent energy consumption must be realized in edge computing environments.
To realize this principle, the CPU clock rate must be adapted to the CPU load. To save energy, a "load-dependent CPU clock" must be realized. This requires a special program in the operating system. When a computer system sleeps, its CPU clock rate is minimal.
The added figure illustrates how the load-dependent energy consumption can be estimated.
This idea was patented in the 90s - see for example:
US 5561792: Microprocessor with software switchable clock speed and drive strength, 1996
US 6076171: Information processing apparatus with CPU-load-based clock frequency, 1998
US 5996084: Method and apparatus for real-time CPU thermal management and power conservation by adjusting CPU clock frequency in accordance with CPU activity, 1998
US 5369771: Computer with transparent power-saving manipulation of CPU clock, 1994
US 5189647: Information processing system having power saving control of the processor clock, 1993