Accession Number:

ADA621523

Title:

Cache Sharing and Isolation Tradeoffs in Multicore Mixed-Criticality Systems

Descriptive Note:

Conference paepr preprint

Corporate Author:

NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF COMPUTER SCIENCE

Personal Author(s):

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

Report Date:

2015-05-01

Pagination or Media Count:

13.0

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.

Descriptors:

• *LINEAR PROGRAMMING
• *MULTIPROCESSORS
• COMPUTER ARCHITECTURE
• OPERATING SYSTEMS(COMPUTERS)
• OPTIMIZATION
• PERFORMANCE(ENGINEERING)
• PROBABILITY DISTRIBUTION FUNCTIONS
• REAL TIME
• SCHEDULING
• SYSTEMS ANALYSIS
• THROUGHPUT
• TRADE OFF ANALYSIS

Subject Categories:

• Operations Research
• Computer Hardware
• Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE