Název:	Estimation of Worst Case Response Time boundaries in multi-core real-time systems
Autoři:	Mucha, Matthias Mottok, Jürgen Krämer, Stefan
Citace zdrojového dokumentu:	2017 International Conference on Applied Electronics: Pilsen, 5th – 6th September 2017, Czech Republic, p.123-127.
Datum vydání:	2017
Nakladatel:	Západočeská univerzita v Plzni
Typ dokumentu:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/35424
ISBN:	978–80–261–0641–8 (Print) 978–80–261–0642–5 (Online)
ISSN:	1803–7232 (Print) 1805–9597 (Online)
Klíčová slova:	neurčitost;výpočetní modelování;časové faktory;programové procesory;systémy v reálném čase;forma
Klíčová slova v dalším jazyce:	uncertainty;computational modeling;time factors;program processors;real-time systems;shape
Abstrakt v dalším jazyce:	We address a novel probabilistic approach to estimate the Worst Case Response Time boundaries of tasks. Multi-core real-time systems process tasks in parallel on two or more cores. Tasks in our contribution may preempt other tasks, block tasks with semaphores to access global shared resources, or migrate to another core. The depicted task behavior is random. The shape of collected response times of a task within a processing time is multimodal. Extreme Value approaches need unimodal response time distributions to estimate the Worst Case Response Time of tasks. The new proposed method derives a set of three task set shapes from the source task set. It is used to minimize the uncertainty of random task behavior by maximizing the coverage of possible Worst Case Response Times. The case study evaluates the new proposed estimation method by the use of dynamically generated random tasks with varying task properties.
Práva:	© Západočeská univerzita v Plzni
Vyskytuje se v kolekcích:	Applied Electronics 2017 Applied Electronics 2017

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