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Bus Access Design for Combined Worst and Average Case Execution Time Optimization of Predictable Real-Time Applications on Multiprocessor Systems-on-Chip

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6 Author(s)
Rosén, J. ; Dept. of Comput. & Inf. Sci., Linkoping Univ., Linkoping, Sweden ; Neikter, C. ; Eles, P. ; Zebo Peng
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Optimization techniques for improving the average-case execution time of an application, for which predictability with respect to time is not required, have been investigated for a long time in many different contexts. However, this has traditionally been done without paying attention to the worst-case execution time. For predictable real-time applications, on the other hand, the focus has been solely on worst-case execution time optimization, ignoring how this affects the execution time in the average case. In this paper, we show that having a good average-case delay can be important also for real-time applications for which predictability is required. Furthermore, for real-time applications running on multiprocessor systems-on-chip, we present a technique for optimizing the average case and the worst case simultaneously, allowing for a good average-case execution time while still keeping the worst case as small as possible.

Published in:

Real-Time and Embedded Technology and Applications Symposium (RTAS), 2011 17th IEEE

Date of Conference:

11-14 April 2011