Interactive governor on ARM architectures for image processing applications with variable requirements

Abstract

Governors on embedded systems have the function of regulating the voltage and frequency of the processors with the aim of satisfying the user's needs and at the same time reducing energy consumption necessary to achieve this. The most common use of these governors, from the point of view of energysaving, is in smartphones, in which the load that the system has to support is extremely variable depending on the user. In industry 4.0, and particularly in Visual Sensor Networks, the load has different characteristics from that of smartphones, and thus both the choice of governor as well as its configuration can allow significant savings in terms of energy, while still satisfying the requirements of the aplication. In this paper a methodology for configuring the Interactive governor is developed which guarantess the response time of the application but also offers energy savings around 40%, depending on the variability of the load.