先来先服务(FCFS)调度算法根据其到达时间简单地调度作业。 就绪队列中第一个工作将首先获得CPU。 工作到达时间越少,工作得到的CPU就越快。 如果第一个进程的突发时间是所有作业中最长的,则FCFS调度可能会导致饥饿问题。 FCFS的优势 简单 容易 先到先得 FCFS的缺点 调度方法是非抢先式的,该进程将运行到完成。 由于...
Classical Problems of Synchronization Deadlock Prevention in OS Deadlock Avoidance in OS Deadlock Detection and Recovery CPU Scheduling HRRN Scheduling Shortest Remaining Time First Longest Job First Scheduling Longest Remaining Time First Scheduling Memory Management Partition Allocation Methods...
OS - Kernel I/O Subsystem & Services OS - Kernel Vs. OS OS - Firmware Vs. OS OS - Process States OS - Process OS - HRRN Scheduling OS - Booting Process OS - Child Process OS - Memory Layout of a Process OS - Types of Computer Memory OS - Cache Memory OS - Cache Memory Performa...
In this tutorial, we will learn about the FCFS, i.e. First Come First Serve Scheduling Algorithm with the help of example.
2.低级调度(Low Level Scheduling)低级调度又称为进程调度或短程调度,其所调度的对象是进程(或内核级线程)。其主要功能是,根据某种算法,决定就绪队列中的哪个进程应获得处理机,并由分派程序将处理机分配给被选中的进程。进程调度是最基本的一种调度,在多道批处理、分时和实时三种类型的OS中,都必须配置这级调度。