I/O Subsystem Interference and Possible Mitigation or Avoidance

Konferenz: ARCS 2016 - 29th International Conference on Architecture of Computing Systems
04.04.2016 - 07.04.2016 in Nürnberg, Deutschland

Tagungsband: ARCS 2016

Seiten: 4Sprache: EnglischTyp: PDF

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Autoren:
Seifert, Georg (Research Center: Competence Field Aviation, Technische Hochschule Ingolstadt, 85049 Ingolstadt, Germany)

Inhalt:
To be able to use Commercial off-the-shelf (COTS) equipment like System-on-a-Chip (SoC) in hard real-time environments the exact structure of the internal system has to be known. One of the main problems is the Worst Case Execution Time (WCET) calculation considering the I/O subsystem. The subsystem induces interferences caused by the transfer from and to the interfaces which compete with the application processors. In this paper the interferences caused by the I/O system are shown and ways to avoid and mitigate these are discussed.