网络RamDisk的设计与实现  

The Design and the Implementation of the Network RamDisk

作　　者：章晓良[1] 余新欣[2] 章隆兵[3] 段浩 

机构地区：[1]合肥工业大学机械与汽车学院,合肥230009 [2]安徽中医学院,合肥230038 [3]中国科技大学计算机系,合肥230026 [4]中国工商银行安徽省分行营业部,合肥230001

出　　处：《现代计算机》2001年第01B期6-10,共5页Modern Computer

摘　　要：在当前计算机产业中,有效的数据存储通常还是由磁盘来实现的。现在,磁盘传输速度不断改善,但远没有微处理的速度增加快,因此,磁盘存取的代价相对于处理器来说,变得越来越大。本文设计并实现一个网络RamDisk,其主要思想是利用远地空闲PC机的内存,来作为一个比本地磁盘快的存储设备。我们的网络RamDisk是在Linux操作系统下,作为一个块设备驱动程序来实现的,因此,不需要修改任何Linux系统的内核代码。我们使用了一些应用程序进行测试,获得了较好的性能.Efficient data storage,a major concern in the modern computer industry,is mostly provided today by the traditional magnetic disk.Unfortunately the cost of a disk transfer measured in processor cycles continues to increase with time,making disk accesses increasingly expensive.In this paper we describe the design,implementation and evaluation of a device that uses main memory of remoteworkstations as a faster-than-disk storage device.Our Network Ram Disk has been implemented both on the Linux operating systems,as a block device driver without any modifications to the kernel code.Using several applications,we measure the performance and find it to be usually four to eight times faster than the magnetic disk.

关 键 词：机群 工作站网络 设备驱动程序 RAMDISK 设计 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]