Dynamic Voltage/Frequency Scaling for EDZL Scheduling in Multicore Real-Time Systems

Park, Minkyu; Paik, Woojin

doi:10.36478/jeasci.2019.8039.8046

Cited by 2 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average energy consumption ratio is shown in Figure2, 3, 4, and5. In the figures, individual denotes the individual speed scheme [22] and N-step denotes the proposed scheme with the number of sections of N(=2, 3, 4, 5 and 6).In case N=2, our scheme consumes less energy than individual only for large total utilizations. If the total utilization is not high, many tasks have a small execution requirement.…”

Section: Methodsmentioning

confidence: 99%

“…Han et. al [22] proposed a DVFS technique called the individual speed scheme. Based on Lee's test [21], it computes an individual speed for each task.…”

Section: Individual Speed Techniquementioning

confidence: 99%

“…There have been many studies on DVFS on multiprocessor (or multicore) real-time systems [1,[6][7][8][9][10][11][12][13][14][15][16]22,[26][27]. Among them, Han et.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, Han et. al [22] proposes the individual speed scheme that calculates an individual speed for periodic tasks in EDZL [17][18][19][20][21] scheduling on multicore platforms. The authors showed that tasks running at their individual speed can be safely scheduled to meet their deadline and consume much less energy.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Multi-Speed Dynamic Voltage/Frequency Scaling Scheme for Multicore Real-Time Systems

2020

IJETER

View full text Add to dashboard Cite

DVFS (dynamic voltage /frequency scaling) is a well-known and prevalent low power technique in processor components. This article proposes a DVFS scheme for multicore real-time systems. The proposed scheme divides the worst-case processor time of a real-time task into multiple sections and associates different speed with each section in increasing order. As a job executes and progresses, its speed increases according to the speed associated with the sections. If a job's actual execution requirement is smaller than its worst-case execution requirement, the job starts and executes at a low speed. The amount of consumed energy is less than the worst case. We integrate and evaluate the scheme with a multicore real-time scheduling. The results show that our multi-speed scheme can save energy consumption by up to 6.99% compared with the individual speed scheme. And we also show that our scheme performs better as the number of sections increases.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Han et. al [22] proposed a DVFS technique called the individual speed scheme. Based on Lee's test [21], it computes an individual speed for each task.…”

Section: Individual Speed Techniquementioning

confidence: 99%

“…There have been many studies on DVFS on multiprocessor (or multicore) real-time systems [1,[6][7][8][9][10][11][12][13][14][15][16]22,[26][27]. Among them, Han et.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Multi-Speed Dynamic Voltage/Frequency Scaling Scheme for Multicore Real-Time Systems

2020

IJETER

View full text Add to dashboard Cite

show abstract

“…Any EDF-schedulable task set is also schedulable by EDZL [18], and EDZL's schedulability is better than other EDF variants [19]- [21].Some research work has studied DVFS techniques for EDZL scheduling. [14] and [22] proposed a task-level static scheme for periodic task set where speed of task is determined before execution. [26] proposed a job-level static scheme where speed of job is determined when the job is released, and the speed is not altered during execution.…”

Section: Introductionmentioning

confidence: 99%

A Simple and Aggressive Dynamic Voltage/Frequency Scaling Technique for EDZL Scheduling on Multiprocessors

Han

2020

IJETER

Self Cite

View full text Add to dashboard Cite

One of significant energy-saving techniques for processor is DVFS (Dynamic Voltage/Frequency Scaling).In real-time embedded systems, DVFS schemes coupled with task schedulers control the execution speed of tasksas low as possible while satisfying the tasks' timing constraints. This article proposes an aggressive DVFS technique for EDZL (Earliest Deadline until Zero Laxity) scheduling. Taking advantage of the gap between actual execution amount and worst-case execution demand, our technique lowers the execution speed of tasks aggressively. It starts a task at a low speed. The speed is raised later if the actual execution amount of the task exceeds half of the worst-case execution demand in order not to violate its timing constraints. We show through simulation that our technique can reduce the energy consumption.

show abstract

Dynamic Voltage/Frequency Scaling for EDZL Scheduling in Multicore Real-Time Systems

Cited by 2 publications

References 0 publications

A Multi-Speed Dynamic Voltage/Frequency Scaling Scheme for Multicore Real-Time Systems

A Multi-Speed Dynamic Voltage/Frequency Scaling Scheme for Multicore Real-Time Systems

A Simple and Aggressive Dynamic Voltage/Frequency Scaling Technique for EDZL Scheduling on Multiprocessors

Contact Info

Product

Resources

About