Multiprocessor Scheduling of Periodic Tasks in a Hard Real-Time Environment
نویسندگان
چکیده
Preemptive scheduling a set of periodic tasks on multi-processors is studied from the point of view of meeting their service requirements before given deadlines. Suf-cient conditions permitting full utilization of the mul-tiprocessor using the given scheduling algorithm are derived. Complexity of the scheduling algorithms including upper bounds on the number of preemptions are derived. Schemes (with little run-time cost) for on-line handling of tasks' arrival and exit are given.
منابع مشابه
Extended Global Dual Priority Algorithm for Multiprocessor Scheduling in Hard Real-Time Systems
In this paper we present a global scheduling method for shared memory multiprocessor systems that provides a fixed-priority preemptive scheduling of periodic tasks, hard aperiodic tasks and soft aperiodic tasks on a set of identical processors. The method is based on the functioning of the Dual Priority Scheduling Algorithm extended to work in a multiprocessor environment. This algorithm guaran...
متن کاملPre-scheduling and Scheduling of Task Graph on Homogeneous Multiprocessor Systems
Task graph scheduling is a multi-objective optimization and NP-hard problem. In this paper a new algorithm on homogeneous multiprocessors systems is proposed. Basically, scheduling algorithms are targeted to balance the two parameters of time and energy consumption. These two parameters are up to a certain limit in contrast with each other and improvement of one causes reduction in the othe...
متن کاملPre-scheduling and Scheduling of Task Graph on Homogeneous Multiprocessor Systems
Task graph scheduling is a multi-objective optimization and NP-hard problem. In this paper a new algorithm on homogeneous multiprocessors systems is proposed. Basically, scheduling algorithms are targeted to balance the two parameters of time and energy consumption. These two parameters are up to a certain limit in contrast with each other and improvement of one causes reduction in the othe...
متن کاملOn the hard-real-time scheduling of embedded streaming applications
In this paper, we consider the problem of hard-real-time (HRT) multiprocessor scheduling of embedded streaming applications modeled as acyclic dataflow graphs. Most of the hard-real-time scheduling theory for multiprocessor systems assumes independent periodic or sporadic tasks. Such a simple task model is not directly applicable to dataflow graphs, where nodes represent actors (i.e., tasks) an...
متن کاملSoft Aperiodic Task Scheduling on Hard Real-Time Multiprocessor Systems
The problem of jointly scheduling both hard deadline periodic tasks and soft aperiodic tasks has been the subject of considerable research in real-time systems. The main goal of such a system is to minimize the response time of soft aperiodic tasks, without jeopardizing the hard deadlines of periodic tasks. Although, several approaches have been developed to schedule critical workloads on multi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1992