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...
TheShortest Job Scheduling Algorithmkeeps track of the Burst time of all the available processes and then assigns the processor to that process which has the shortest burst time. This is also a type of non-preemptive scheduling algorithm where once a process starts its execution, it cannot be ...
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 (...
clanground-robinoperating-systemsrtfcfshrnsjfpreemptive-sjfganttchartnon-preemptivecpu-scheduling-simulator UpdatedNov 2, 2019 C Rakibul73/Operating_System_Code Star14 Code Issues Pull requests Operating System Code in Python 3 pythonfcfsdeadlock-detectiondining-philosophers-problemsjfpriority-schedulingmutex...
Non-preemptive scheduler Example: A 刚好在 B 之前就位,而 B 刚好在 C 之前到达。 A 跑了 100 秒,B 和 C 各跑了 10 秒。 𝑨𝒗𝒆𝒓𝒂𝒈𝒆 𝒕𝒖𝒓𝒏𝒂𝒓𝒐𝒖𝒏𝒅 𝒕𝒊𝒎𝒆 = SJF with Late Arrivals from B and C ...
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...
采用最短作业优先的抢先调度算法(PrEEmptivE SJF)调度表所示的进程,平均等待时间为 (6) 。进程运行的相关信息 进程 到达时间 处理需要时间 P1 0.0 7.0 P2 2.0 4.0 P3 4.0 1.0 P4 5.0 3.0 P5 6.0 1.0 A.2.0B、2.4 C.2.8 D.3.0 点击查看答案
4.5(343+) | 6k users CSS Language Course 4.5(306+) | 3.3k users HTML Course 4.7(2k+ ratings) | 13.5k learners About the author: Nikitao6pd1 Nikita Pandey is a talented author and expert in programming languages such as C, C++, and Java. Her writing is informative, engaging, and o...
In this method, burst time can be predicted according to the size of a process. Here, the burst time is taken similar to the currently running process and the newly arrived process that is to be executed. For example, suppose a size currently running process (...
In honor of a well-known buyer's shopPillowHeatSet up 20th anniversary.VansThe red / Blue matching checkerboard element is injected into the Rowley Pro and added the word "66/99" in it to show the identity and bring the 3M gray reflection details. ...