TY - BOOK
T1 - Execution-Time Properties of a Hybrid Controller
AU - Persson, Patrik
AU - Cervin, Anton
AU - Eker, Johan
PY - 2000
Y1 - 2000
N2 - We are interested in gaining more knowledge about the execution-time requirements of real-time control tasks, and this paper presents a system for gathering statistics of the execution times of real-time tasks. The system allows real-time code to be instrumented in order to gather, analyze, and present execution-time statistics. It has been used to instrument an existing hybrid controller to gather execution-time statistics. These statistics indicate that the worst-case execution times of the controller occur in conjunction with reference and mode changes, and that a scheduling based on that worst-case execution time leads to poor CPU utilization.
AB - We are interested in gaining more knowledge about the execution-time requirements of real-time control tasks, and this paper presents a system for gathering statistics of the execution times of real-time tasks. The system allows real-time code to be instrumented in order to gather, analyze, and present execution-time statistics. It has been used to instrument an existing hybrid controller to gather execution-time statistics. These statistics indicate that the worst-case execution times of the controller occur in conjunction with reference and mode changes, and that a scheduling based on that worst-case execution time leads to poor CPU utilization.
M3 - Report
T3 - Technical Reports TFRT-7591
BT - Execution-Time Properties of a Hybrid Controller
PB - Department of Automatic Control, Lund Institute of Technology (LTH)
ER -