Title :
PEG-C: Performance Enhancement Guaranteed Cache for Hard Real-Time Systems
Author :
Yijie Huangfu ; Wei Zhang
Author_Institution :
Dept. of Electr. & Comput. Eng., Virginia Commonwealth Univ., Richmond, VA, USA
Abstract :
This letter designs the performance enhancement guaranteed cache (PEG-C) for hard real-time systems. The PEG-C uses two counters to monitor the number of hits and misses at runtime to improve the average-case performance, while guaranteeing the worst-case execution time (WCET). Our experiments indicate that with a few preloaded instructions, a PEG instruction cache can achieve the same average-case performance as a regular instruction cache while ensuring performance enhancement even in the worst case.
Keywords :
cache storage; real-time systems; PEG-C; WCET; average-case performance; hard real-time systems; performance enhancement guaranteed cache; worst-case execution time; Benchmark testing; Cache memory; Context; Monitoring; Radiation detectors; Real-time systems; Runtime; Cache memory; real-time systems;
Journal_Title :
Embedded Systems Letters, IEEE
DOI :
10.1109/LES.2013.2296779
