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Frame-Based Proportional Round-Robin

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3 Author(s)
Sarkar, A. ; Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Kharagpur ; Chakrabarti, P.P. ; Kumar, R.

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

Published in:

Computers, IEEE Transactions on  (Volume:55 ,  Issue: 9 )

Date of Publication:

Sept. 2006

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