Mixed-criticality scheduling with memory bandwidth regulation

• Type: Article in International Conference Proceedings Book
• Date: 2018

Authors

Muhammad Ali Awan (Author) Other; Pedro F. Souto (Author) FEUP; Konstantinos Bletsas (Author) Other; Benny Akesson (Author) Other; Eduardo Tovar (Author) Other

Conference proceedings International

Title: 2018 Design, Automation & Test in Europe Conference & Exhibition, DATE 2018, Dresden, Germany, March 19-23, 2018

Pages: 1277-1282

Indexing

ISI Web of Science

Scopus - 7 Citations

INSPEC

Other information

Authenticus ID: P-00N-X4T

DOI: 10.23919/DATE.2018.8342211

Abstract (EN): Mixed-criticality (MC) multicore system design must reconcile safety guarantees and high performance. The interference among cores on shared resources in such systems leads to unpredictable temporal behaviour. Memory bandwidth regulation among different cores can be a useful tool to mitigate the interference when accessing main memory. However, for mixed-criticality systems conforming to the (well-established) Vestal model, the existing schedulability analyses are oblivious to memory stalling effects, including stalls from memory bandwidth regulation. This makes it unsafe. In this paper, we address this issue by formulating a schedulability analysis for mixed-criticality fixed-priority-scheduled multicore systems using per-core memory access regulation. We also propose multiple heuristics for memory bandwidth allocation and task-to-core assignment. We implement our analysis and heuristics in a tool and evaluate them, performance-wise, through extensive experiments. Our experiments show that stall-oblivious schedulability analysis may be optimistic due to contention on shared memory resources. © 2018 EDAA.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6