Throughput-constrained voltage and frequency scaling for real-time heterogeneous multiprocessors
Pengcheng Huang, Orlando Moreira, Kees G. W. Goossens, Anca M. Molnos · 2013
Voltage and Frequency Scaling (VFS) can effectively reduce energy consumption at system level. Most work in this field has focused on deadline-constrained applications with finite schedule lengths. However, in typical real-time streaming, processing is repeatedly activated by indefinitely long data streams and operations on successive data instances are overlapped to achieve a tight throughput. A particular application domain where such characteristics co-exist with stringent energy consumption constraints is baseband processing. Such behavior requires new VFS scheduling policies. This paper addresses throughput-constrained VFS problems for real-time streaming with discrete frequency levels on a heterogeneous multiprocessor.