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題 名 | Design and Implementation of a Memory-Based Object Server for Hand-Held Computers |
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作 者 | 姜美玲; 李照賢; 羅時岳; 張瑞川; | 書刊名 | Journal of Information Science and Engineering |
卷 期 | 13:3 1997.09[民86.09] |
頁 次 | 頁431-446 |
分類號 | 448.819 |
關鍵詞 | PDA; Buddy system; Compression; Transaction processing; Mobile computing; |
語 文 | 英文(English) |
英文摘要 | PDAs (Personal Digital Assistants) are resource-limited systems that cannot directly employ conventional system software. In this paper, a new memory-based object server, ROSS, for PDAs is presented. An enhanced buddy system and application-specific on-line object compression are employed to increase memory utilization. To keep data consistent, transaction management is also included in the server. Performance evaluations show that ROSS meets PDA requirements and performs well in PDA applications. The enhanced buddy s stem effectively reduces the internal fragmentation incurred in the basic buddy system and outperforms the conventional block-based allocation system in memory utilization. ROSS requires only 81.31% of the storage space required by Newton for the PDA Names application. |
本系統中英文摘要資訊取自各篇刊載內容。