多媒体文件系统的实现与评价

Proceedings of IEEE International Conference on Multimedia Computing and Systems Pub Date : 1997-06-03 DOI:10.1109/MMCS.1997.609602

T. Niranjan, T. Chiueh, Gerhard A. Schloss

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引用次数: 25

摘要

MMFS是一种多媒体文件系统，它扩展了UNIX文件系统(UFS)，专门用于交互式多媒体应用。MMFS支持用于单媒体编辑和多媒体播放环境的二维文件结构。该API允许将特定于应用程序的信息通信到MMFS，以实现性能优化。MMFS通过支持智能预取和基于状态的缓存、优先级实时磁盘调度和同步多流检索，显著提高了交互式回放性能。除了改进了类似vcr的播放模式的响应时间外，MMFS优化还使多流检索期间的同步倾斜最小化，并且与UFS相比，编辑操作的响应时间减少了数量级。

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Implementation and evaluation of a multimedia file system

The paper describes the implementation and evaluation of MMFS, a Multimedia File System that extends the UNIX File System (UFS) specifically for interactive multimedia applications. MMFS supports a two-dimensional file structure for single-medium editing and multiple-media playback environments. The API allows the communication of application-specific information to MMFS for performance optimization. MMFS significantly improves interactive playback performance by supporting intelligent prefetching and state-based caching, prioritized real-time disk scheduling, and synchronized multi-stream retrieval. In addition to improved response time for VCR-like playback modes, the MMFS optimizations lead to minimal synchronization skew during multi-stream retrievals, and orders-of-magnitude reduction in response time for editing operations, when compared to UFS.

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Proceedings of IEEE International Conference on Multimedia Computing and Systems

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