Continuous media filesystem services on a real-time JAVA server

Proceedings Fifth International Conference on Real-Time Computing Systems and Applications (Cat. No.98EX236) Pub Date : 1998-10-27 DOI:10.1109/RTCSA.1998.726424

A. Molano, A. Miyoshi, H. Tokuda, R. Rajkumar

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引用次数: 1

Abstract

We investigate filesystem support for continuous media on the Java language. We describe a prototype implementation on a Real-Time Java Server, developed as an application level server on the Real-Time Mach microkernel environment. The Java virtual machine has been extended to support filesystem bandwidth reservation facilities existing on Real-Time Mach. Such facilities allow continuous media applications to specify their disk bandwidth usage requirements by creating a disk bandwidth reservation. The operating system, upon acceptance of the requests, internally enforces and guarantees such a share of the disk bandwidth for every active reservation. We present a performance evaluation, including both a synthetic application and real multimedia application based on a QuickTime video player which make use of real time Java threads and filesystem bandwidth reservation facilities. Our experiments conclude that the proposed filesystem extensions to the Java language are suitable for continuous media application requirements.

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实时JAVA服务器上的连续媒体文件系统服务

我们研究了Java语言上对连续介质的文件系统支持。我们描述了一个在Real-Time Mach微内核环境下作为应用级服务器开发的实时Java服务器的原型实现。Java虚拟机已经扩展到支持Real-Time Mach上现有的文件系统带宽保留功能。这种工具允许连续媒体应用程序通过创建磁盘带宽预留来指定它们的磁盘带宽使用需求。在接受请求后，操作系统会在内部强制执行并保证每个活动预留的磁盘带宽共享。我们给出了一个性能评估，包括一个基于QuickTime视频播放器的合成应用程序和一个真实的多媒体应用程序，它利用了实时Java线程和文件系统带宽预留功能。我们的实验得出结论，建议的Java语言文件系统扩展适合连续媒体应用程序的需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings Fifth International Conference on Real-Time Computing Systems and Applications (Cat. No.98EX236)

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