TY - JOUR
T1 - Response Times Reconstructor Based on Mathematical Expectation Quotient for a High Priority Task over RT-Linux
AU - González-Baldovinos, Diana L.
AU - Guevara-López, Pedro
AU - Cano-Rosas, Jose Luis
AU - Valdez-Martínez, Jorge Salvador
AU - López-Chau, Asdrúbal
N1 - Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - Every computer task generates response times depending on the computer hardware and software. The response times of tasks executed in real-time operating systems such as RT-Linux can vary as their instances evolve even though they always execute the same algorithm. This variation decreases as the priority of the tasks increases; however, the minimum and maximum response times are still present in the same task, and this complicates its monitoring, decreasing its level of predictability in case of contingency or overload, as well as making resource sizing difficult. Therefore, the need arises to propose a model capable of reconstructing the dynamics of response times for the instances of a task with high priority in order to analyze their offline behavior under specific working conditions. For this purpose, we develop the necessary theory to build the response time reconstruction model. Then, to test the proposed model, we set up a workbench consisting of a single board computer, PREEMPT_RT, and a high priority task generated by the execution of a matrix inversion algorithm. This work demonstrates the application of the theory in an experimental process, presenting a way to model and reconstruct the dynamics of response times by a high-priority task on RT-Linux.
AB - Every computer task generates response times depending on the computer hardware and software. The response times of tasks executed in real-time operating systems such as RT-Linux can vary as their instances evolve even though they always execute the same algorithm. This variation decreases as the priority of the tasks increases; however, the minimum and maximum response times are still present in the same task, and this complicates its monitoring, decreasing its level of predictability in case of contingency or overload, as well as making resource sizing difficult. Therefore, the need arises to propose a model capable of reconstructing the dynamics of response times for the instances of a task with high priority in order to analyze their offline behavior under specific working conditions. For this purpose, we develop the necessary theory to build the response time reconstruction model. Then, to test the proposed model, we set up a workbench consisting of a single board computer, PREEMPT_RT, and a high priority task generated by the execution of a matrix inversion algorithm. This work demonstrates the application of the theory in an experimental process, presenting a way to model and reconstruct the dynamics of response times by a high-priority task on RT-Linux.
KW - High priority
KW - Mathematical expectation quotient
KW - RT-Linux
KW - Reconstruction model
KW - Response times dynamic
UR - http://www.scopus.com/inward/record.url?scp=85122080758&partnerID=8YFLogxK
U2 - 10.3390/math10010134
DO - 10.3390/math10010134
M3 - Artículo
AN - SCOPUS:85122080758
SN - 2227-7390
VL - 10
JO - Mathematics
JF - Mathematics
IS - 1
M1 - 134
ER -