Frame-Based Proportional Round-Robin
Arnab Sarkar, P. P. Chakrabarti, R. V. Raja Kumar · IEEE Transactions on Computers · 2006
All known real-time proportional fair scheduling mechanisms either have high scheduling overheads (O(lg n) per time-slot) or do not efficiently handle dynamic task sets. This paper presents frame-based proportional round-robin (FBPRR), a real-time fair scheduler providing high and bounded proportional fairness accuracy and O(1) scheduling overhead with the ability to efficiently handle a set of dynamic tasks. FBPRR achieves this by applying the benefits of virtual-time round-robin (VTRR) scheduling mechanism within a frame-based scheduling approach. Simulation results show that the algorithm gains a speedup of 5 to 20 times (over O(lg n) complexity schedulers) with fairly high fairness