Schedulability Analysis for Multi-core Systems Accounting for Resource Stress and Sensitivity

TY - GEN

T1 - Schedulability Analysis for Multi-core Systems Accounting for Resource Stress and Sensitivity

AU - Davis, Robert Ian

AU - Griffin, David Jack

AU - Bate, Iain John

N1 - © Robert I. Davis, David Griffin, and Iain Bate.

PY - 2021/4/6

Y1 - 2021/4/6

N2 - Timing verification of multi-core systems is complicated by contention for shared hardware resources between co-running tasks on different cores. This paper introduces the Multi-core Resource Stress and Sensitivity (MRSS) task model that characterizes how much stress each task places on resources and how much it is sensitive to such resource stress. This model facilitates a separation of concerns, thus retaining the advantages of the traditional two-step approach to timing verification (i.e. timing analysis followed by schedulability analysis). Response time analysis is derived for the MRSS task model, providing efficient context-dependent and context independent schedulability tests for both fixed priority preemptive and fixed priority non-preemptive scheduling. Dominance relations are derived between the tests, and proofs of optimal priority assignment provided. The MRSS task model is underpinned by a proof-of-concept industrial case study.

AB - Timing verification of multi-core systems is complicated by contention for shared hardware resources between co-running tasks on different cores. This paper introduces the Multi-core Resource Stress and Sensitivity (MRSS) task model that characterizes how much stress each task places on resources and how much it is sensitive to such resource stress. This model facilitates a separation of concerns, thus retaining the advantages of the traditional two-step approach to timing verification (i.e. timing analysis followed by schedulability analysis). Response time analysis is derived for the MRSS task model, providing efficient context-dependent and context independent schedulability tests for both fixed priority preemptive and fixed priority non-preemptive scheduling. Dominance relations are derived between the tests, and proofs of optimal priority assignment provided. The MRSS task model is underpinned by a proof-of-concept industrial case study.

KW - real-time

KW - multi-core

KW - scheduling

KW - schedulability analysis

KW - cross-core contention

KW - resource stress

KW - resource sensitivity

UR - https://www-users.cs.york.ac.uk/~robdavis/

M3 - Conference contribution

SP - 7:1-7:26

BT - 33rd Euromicro Conference on Real-Time Systems 2021 (proceedings)

PB - ACM

T2 - 33rd Euromicro Conference on Real-Time Systems 2021

Y2 - 5 July 2021 through 9 July 2021

ER -