采用最短作业优先的抢先调度算法(Preemptive SJF)调度表2-7所示的进程,平均等待时间为 (6) 。 A.2.0B.2.4C.2.8D.3.0 相关知识点: 试题来源: 解析 C [分析] 由于采用的是最短作业优先的抢先调度算法,所以在最开始的时候,P1进程运行。在P1运行两个小时后,P2到达,P2运行的时间比P1小,所以P2运行。P2运行两...
从图中可以看出,即使 B 和 C在 A 到达不久之后到达,他们仍然是要被迫等待 A完成,同样是遭遇了护航问题。 0x04 Algorithm3:最短完成时间优先(STCF) Add preemption to SJF → Shortest Time-to-Completion First (STCF). Also known as Preemptive Shortest Job First (PSJF) or Shortest Remaining Time Fi...
从图中可以看出,即使 B 和 C在 A 到达不久之后到达,他们仍然是要被迫等待 A完成,同样是遭遇了护航问题。 0x04 Algorithm3:最短完成时间优先(STCF) Add preemption to SJF →Shortest Time-to-Completion First (STCF). Also known asPreemptive Shortest Job First (PSJF)orShortest Remaining Time First (...
In particular, a classic result of Schrage [38] assures that the shortest remaining processing time (SRPT) policy, giving preemptive priority to the job which can be completed first, minimizes the queue length in a single-server system at each point in time. It is natural to ask how well...
In this tutorial, we learned how to program for a (SJF) SHORTEST JOB FIRST Scheduling Algorithm ← FCFS Find Average of N input Numbers → Want to learn coding? Try our new interactive courses. View All → C Language CourseNEW 115+ Coding Exercise ...
well-known preemptive scheduling disciplines (shortest job first, earliest due date, and least laxity first), as well as first-come, first-served. Good... Craig, D.W.,Woodside, C.M. - 《IEEE Transactions on Software Engineering》 被引量: 26发表: 1990年 AN IMPROVED ROUND ROBIN CPU SCHED...
Moreover, we show that in this network no customer is ever preempted, so this example shows also the system instability under the shortest job first (SJF) discipline, a non-preemptive variant of SRPT. Due to deterministic service times and the lack of preemption, in the network from our ...
Shortest job first is a scheduling algorithm in which the process with the smallest execution time is selected for execution next. Shortest job first can be either preemptive or non-preemptive. Owing to its simple nature, shortest job first is considered optimal. It also reduces the average wai...
This time, CDG invited to fashion.GucciJointly manufactured a PVC bag, imported kraft paper sandwich and professional lining highlight the quality. In addition, the red and green classic ribbon and the low-key flower elements on the outside of the bag also call the status. ...
CPFM 2020 spring new productsIt will be on the shelves tomorrow at DSM LA, where special facilities will also be installed and free drinks will be available on weekends. Just friends in Losangeles might as well go to onlookers!