Controller Area Network (CAN) Schedulability Analysis with FIFO queues

Rob Davis, Steffen Kollmann, Victor Pollex, Frank Slomka

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Controller Area Network (CAN) is widely used in automotive applications. Existing schedulability analysis for CAN is based on the assumption that the highest priority
message ready for transmission at each node on the network will be entered into arbitration on the bus. However, in practice, some CAN device drivers implement FIFO rather than priority-based queues invalidating this assumption. In this paper, we introduce response time analysis and optimal priority assignment policies for CAN messages in networks where some nodes use FIFO queues while other nodes use priority queues. We show, via a case study and experimental evaluation, the detrimental impact that FIFO queues have on the real-time performance of CAN.
Original languageEnglish
Title of host publicationEuromicro Conference on Real-Time Systems
Number of pages12
Publication statusPublished - Jul 2011

Bibliographical note



  • controller area network
  • CAN
  • real-time
  • schedulability analysis
  • networks
  • communications
  • fifo

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