Cache Sharing and Isolation Tradeoffs in Multicore Mixed-Criticality Systems

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2015
Accession Number
ADA621317

Entities

People

  • Bryan C. Ward
  • James H. Anderson
  • Micaiah Chisholm
  • Namhoon Kim

Organizations

  • University of North Carolina at Chapel Hill

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Accounting
  • Algorithms
  • Computer Programming
  • Computer Science
  • Computers
  • Computing-Related Activities
  • Information Operations
  • Integrals
  • Linear Programming
  • Measurement
  • North Carolina
  • Operating Systems
  • Optimization
  • Platforms
  • Probability Distributions
  • Scheduling (Production)
  • Throughput

Fields of Study

  • Computer science

Readers

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