5. CPU Scheduling 5.1 Basic Concepts 5.2 Scheduling Criteria(准则) 5.3 Scheduling Algorithms 5.4 Multiple-Processor Scheduling 5.5 Thread Scheduling 5.6 Operating Systems Examples 5.7 Algorithm Evaluation 13 5.2 Scheduling Criteria Many criteria have been suggested for comparing CPU scheduling algorithms. ...
Some Algorithms based on non-preemptive scheduling are: Shortest Job First (SJF basically non-preemptive) Scheduling and Priority (non- preemptive version) Scheduling, etc.2. Preemptive SchedulingIn this type of Scheduling, the tasks are usually assigned with priorities. At times it is necessary...
Chapter5:CPUSchedulingChapter5:CPUScheduling BasicConcepts SchedulingCriteria SchedulingAlgorithms Multiple-ProcessorScheduling Real-TimeScheduling ThreadScheduling OperatingSystemsExamples JavaThreadScheduling AlgorithmEvaluation 5.3 Silberschatz,GalvinandGagne©2005 ...
Scheduling algorithms deal with the problems of deciding the process which is in the ready queue and need to be allocated in the CPU. There are some algorithms which are discussed below: 1. First-Come First-Served Scheduling It is a simplest CPU scheduling algorithm. According to this, the ...
Multilevel Feedback Queue schedulingIn Multiprogramming operating system, CPU scheduling plays a very important role. CPU scheduling dealswith the problem that to which process the CPU should be allocated. For scheduling the processes in different ways, thereare many different scheduling algorithms.This...
A few examples of hardware contain video cards, printers, monitor screens, and hard drives. The significance of hardware is providing the application a platform to operate on. The computer program can’t work with hardware as it’s the foundation it can operate. The hardware and software ...
ch06-CPU Scheduling Chapter6:CPUScheduling BasicConceptsSchedulingCriteriaSchedulingAlgorithmsMultiple-ProcessorSchedulingReal-TimeSchedulingAlgorithmEvaluation OperatingSystemConcepts 6.1 Silberschatz,GalvinandGagne2002 BasicConcepts MaximumCPUutilizationobtainedwithmultiprogrammingCPU–I/OBurstCycle–Processexecutionconsist...
There are two types processes have the different response time, the different requirement of resources so these processes need different scheduling algorithms. The foreground processes have priority(externally defined) over background processes.In the multilevel queue scheduling algorithm partition the ready...
It also provides certain details of the CPU scheduling algorithms. This paper is updated to reflect the changes in the ESX 4.1 CPU scheduler. Sections 3.4 and 4.4 discuss wide-VM NUMA support and its performance impact. It is assumed that readers are familiar with virtualization using VMware®...
2.Any cpu with the same physical id are threads or cores in the same physical socket. 比如cat /proc/cpuinfo 显示4个逻辑CPU,通过physical id,前面两个逻辑cpu的相同,后面两个的相同,则有两个物理CPU。前面两个的 core id相同,后面的两个core ID相同,说明这两个CPU都是单核。也就是说两个单核cpu,...