{"title":"Implementation and evaluation of a multimedia file system","authors":"T. Niranjan, T. Chiueh, Gerhard A. Schloss","doi":"10.1109/MMCS.1997.609602","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":302885,"journal":{"name":"Proceedings of IEEE International Conference on Multimedia Computing and Systems","volume":"38 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1997-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"25","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of IEEE International Conference on Multimedia Computing and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MMCS.1997.609602","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 25
Abstract
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.