TY - GEN
T1 - Time-predictable task preemption for real-time systems with direct-mapped instruction cache
AU - Kirner, Raimund
AU - Puschner, Peter
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PY - 2007
Y1 - 2007
N2 - Modern processors used in embedded systems are becoming increasingly powerful, having features like caches and pipelines to speedup execution. While execution speed of embedded software is generally increasing, it becomes more and more complex to verify the correct temporal behavior of software, running on this high-end embedded computer systems. To achieve time-predictability the authors introduced a very rigid software execution model with distribution being realized based on the time-triggered communication model. In this paper we analyze the time-predictability of a preempting task-activation, running on a hardware with direct-mapped instruction caches. As one result we analyze why a task-preemption driven by a clock interrupt is not suitable to guarantee time-predictability. As a second result, we present a time-predictable task-preemption driven by an instruction counter.
AB - Modern processors used in embedded systems are becoming increasingly powerful, having features like caches and pipelines to speedup execution. While execution speed of embedded software is generally increasing, it becomes more and more complex to verify the correct temporal behavior of software, running on this high-end embedded computer systems. To achieve time-predictability the authors introduced a very rigid software execution model with distribution being realized based on the time-triggered communication model. In this paper we analyze the time-predictability of a preempting task-activation, running on a hardware with direct-mapped instruction caches. As one result we analyze why a task-preemption driven by a clock interrupt is not suitable to guarantee time-predictability. As a second result, we present a time-predictable task-preemption driven by an instruction counter.
U2 - 10.1109/ISORC.2007.56
DO - 10.1109/ISORC.2007.56
M3 - Conference contribution
SN - 0-7695-2765-5
SP - 87
EP - 92
BT - In: Procs of 10th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing
A2 - DeMiguel, M
A2 - Kalogeraki, V
A2 - Kim, DH
PB - Institute of Electrical and Electronics Engineers (IEEE)
T2 - 10th IEEE International Symposium on Object and Component-Oriented Real-Time Distributed Computing
Y2 - 7 May 2007 through 9 May 2007
ER -