Defending Event-Triggered Systems against Out-of-Envelope Environments
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909947205255168 |
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| author | Völp, Marcus Alkoudsi, Mohammad Ibrahim Asl, Azin Bayrami Krüger, Kristin da Neto, Julio Rodrigues Mendonca Fohler, Gerhard |
| author_facet | Völp, Marcus Alkoudsi, Mohammad Ibrahim Asl, Azin Bayrami Krüger, Kristin da Neto, Julio Rodrigues Mendonca Fohler, Gerhard |
| contents | The design of real-time systems is based on assumptions about environmental conditions in which they will operate. We call this their safe operational envelope. Violation of these assumptions, i.e., out-of-envelope environments, can jeopardize timeliness and safety of real-time systems, e.g., by overwhelming them with interrupt storms. A long-lasting debate has been going on over which design paradigm, the time- or event-triggered, is more robust against such behavior. In this work, we investigate the claim that time-triggered systems are immune against out-of-envelope behavior and how event-triggered systems can be constructed to defend against being overwhelmed by interrupt showers. We introduce importance (independently of priority and criticality) as a means to express which tasks should still be scheduled in case environmental design assumptions cease to hold, draw parallels to mixed-criticality scheduling, and demonstrate how event-triggered systems can defend against out-of-envelope behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_06331 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Defending Event-Triggered Systems against Out-of-Envelope Environments Völp, Marcus Alkoudsi, Mohammad Ibrahim Asl, Azin Bayrami Krüger, Kristin da Neto, Julio Rodrigues Mendonca Fohler, Gerhard Operating Systems Systems and Control The design of real-time systems is based on assumptions about environmental conditions in which they will operate. We call this their safe operational envelope. Violation of these assumptions, i.e., out-of-envelope environments, can jeopardize timeliness and safety of real-time systems, e.g., by overwhelming them with interrupt storms. A long-lasting debate has been going on over which design paradigm, the time- or event-triggered, is more robust against such behavior. In this work, we investigate the claim that time-triggered systems are immune against out-of-envelope behavior and how event-triggered systems can be constructed to defend against being overwhelmed by interrupt showers. We introduce importance (independently of priority and criticality) as a means to express which tasks should still be scheduled in case environmental design assumptions cease to hold, draw parallels to mixed-criticality scheduling, and demonstrate how event-triggered systems can defend against out-of-envelope behavior. |
| title | Defending Event-Triggered Systems against Out-of-Envelope Environments |
| topic | Operating Systems Systems and Control |
| url | https://arxiv.org/abs/2512.06331 |