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A Disk Head Scheduling Simulator

机译:磁盘头调度模拟器

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Disk head scheduling is a standard topic in undergraduate operating systems courses. Disk drives were once fairly simple devices with little intelligence. Disk head scheduling and bad block mapping were done exclusively by operating systems. As disk drives became larger and faster, they took on some of these tasks. Modern drives often have a large cache and hide their internal structure from the outside world. In spite of changes in disk technology, the teaching of disk head scheduling has changed little over the last decade. This paper describes a disk head scheduling simulator that allows students to explore traditional disk scheduling algorithms as well as the consequences of modern disk technology. The simulator, which is written in Java and is freely available, can be run remotely from a browser or downloaded for local execution. We present methods for modifying the traditional curriculum to make the presentation of disk head scheduling more relevant and interesting.
机译:磁盘磁头调度是本科生操作系统课程中的标准主题。磁盘驱动器曾经是相当简单的设备,几乎没有智能。磁盘头调度和坏块映射完全由操作系统完成。随着磁盘驱动器变得越来越大和越来越快,它们承担了其中的一些任务。现代驱动器通常具有很大的缓存,并且内部结构对外界隐藏。尽管磁盘技术发生了变化,但磁盘头调度的教学在过去十年中几乎没有变化。本文介绍了一个磁盘头调度模拟器,使学生可以探索传统的磁盘调度算法以及现代磁盘技术的后果。该模拟器是用Java编写的,可免费获得,可以从浏览器远程运行或下载以进行本地执行。我们提出了修改传统课程的方法,以使磁盘磁头调度的呈现更加相关和有趣。

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