Abstract
The Vestal model in widely used in the real-time scheduling community for representing mixed-criticality real-time workloads. This model requires that multiple WCET estimates -- one for each criticality level in a system -- be obtained for each task. Burns suggests that being required to obtain too many WCET estimates may place an undue burden on system developers, and proposes a simplification to the Vestal model that makes do with just two WCET estimates per task. Burns makes a convincing case in favor of adopting this simplified model; here, we report on our attempts at comparing the two models -- Vestal’s original model, and Burns’ simplification – with regards to expressiveness, as well as schedulability and the tractability of determining schedulability.
Recommended Citation
S. K. Baruah and Z. Guo, "Mixed-Criticality Job Models: A Comparison," Proceedings of the 3rd Workshop on Mixed-Criticality Systems (2015, San Antonio, TX), Workshop on Mixed-Criticality Systems (WMC), Dec 2015.
Meeting Name
3rd Workshop on Mixed-Criticality Systems, WMC (2015: Dec. 1, San Antonio, TX)
Department(s)
Computer Science
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2015 The Authors, All rights reserved.
Publication Date
01 Dec 2015
Comments
This research was supported in part by NSF grants CNS 1115284, CNS 1218693, CNS 1409175, and CPS 1446631, AFOSR grant FA9550-14-1-0161, ARO grant W911NF-14-1-0499, and a grant from General Motors Corp.