Cache Sharing and Isolation Tradeoffs in Multicore Mixed-Criticality Systems
Conference paper preprint
NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF COMPUTER SCIENCE
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In mixed-critical applications, tension exists between sharing and isolation with respect to hardware resources while strong isolation might be required for highly critical tasks somewhat permissive sharing might be reasonable for less critical tasks to improve throughput or average-case performance. In this paper, this tension is examined as it pertains to shared last-level caches LLCs on multicore platforms. In particular, criticality-aware optimization techniques based on linear programming are presented for allocating LLC areas in the context of the previously proposed MC2 mixed-criticality on multicore framework. Experiments are also presented that show that these techniques can result in significant schedulability improvements.
- Operations Research
- Computer Hardware