1 worker is running with preemptive scheduling 1 =正在以抢先计划运行工作线程。
What is the difference between preemptive scheduling and time slicing 抢先调度与分时调度有何不同?
Any worker that is running external code is run under preemptive scheduling 任何运行外部代码的工作线程都运行在抢先计划之下。
Some tasks , such as network listeners , run under preemptive scheduling 某些任务(例如,空闲工作线程和网络侦听器)在抢先计划下运行。
Under preemptive scheduling , the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence 采用抢先调度方式时,具有最高优先级的任务先执行直到它进入等待或僵死状态,或者是有更高优先级的任务产生。
A : under preemptive scheduling , the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence 采用抢先调度方式时,具有最高优先级的任务先执行直到它进入等待或僵死状态,或者是有更高优先级的任务产生。
First we give some notations : where r lti : the load of the machine at step t ( i . e . , immediately after the ith job has been scheduled ) optt : the current optimum makespan in step t ( for the job set { j1 ; … , jt } ) lbt : the lower bound of the length in step t for a set of jobs with processing times p1 , … , pn , there are three straightforward lower bounds for the makespan of any preemptive schedule on m identical machines : max so we have lb = max ( 3 . 2 . 1 ) the algorithm will schedule jobs in such a way that , at any step t algorithm : a new job jt + 1 ( which arrives at time t + 1 ) is assigned as follows : step 1 compute the new lower bound lbi + 1 according to ( 3 . 2 . 1 ) step 2 research the following reserved intervals 需加工n个工件人; … ;人,每个工件是在线到达( oneb , olle )且可打断的,机器人人的准备时间为az ,怎样安排加工顺序,使工件的最大完工时间( makespan )尽可能地小,称此问题为带机器准备时间的平行机在线排序问题。它是带机器准备时间的平行机排序和平行机在线排序问题的综合和推广;具有广泛的应用背景。这里工件在线到达( onebyone )指的是工件的情况并不是提前知道的,只有将工件jj人安排完以后我们才能知道工jj的一些情况p工件的加工时间p 。