operation system cache 中文意思是什麼
operation system cache
解釋
系統高速緩沖存儲器-
The goal we must achieve, when designing distributed parallel file system, was analyzed also. the thesis present the logic structure of dpfs, the structure and the flush strategy of the module of directory cache and its role in the read - write operation, duplicate table ' s physical and logical structure, the management and synchronization algorithm of the duplicate table, and the model and the management algorithm of the module of intelligent duplicate management. also the effects that dpfs exerts to the system reliability and the read and write performance compared to ext2 were analyzed
本文首先介紹了數據存儲的發展概況與新的需求，分散式文件系統對其發展的重要影響以及設計分散式文件系統需要考慮的各種問題；然後分析了為滿足分散式并行服務器的功能需求， dpfs應實現的目標；接著介紹了dpfs設計的總體邏輯結構，目錄緩存管理模塊的結構設計、刷新策略以及該模塊在文件讀寫重定向中的作用，副本表的邏輯、物理結構、對其緩存的管理和同步演算法的實現，以及副本智能管理的設計模型及其管理演算法的設計與實現，還分析了dpfs對系統可靠性的影響以及在讀寫文件時與ext2文件系統性能的比較。 -
Pipelining and parallel technology, accompanying with fast fifo as cache memory, instead of direct program operation, are adopted in the scheme and increase the transmitting speed dramatically ; fpga ( field programmable gate array ) is applied to realize the complex control logic of the system and makes it integrative, flexible and fast ; 386ex based embedded system, along with vxworks real - time operating system is introduced to substitute the microcontroller based system to simplify the hardware design and enhance the overall performance of ssr, and will make the system more easier to be applied to the projects in the future
該設計方案採用了流水線和并行技術，配以快速fifo緩存的方式取代了直接對flash進行編程的方式，極大地提高了閃存晶元存儲數據的速率；採用fpga技術實現系統的主要控制邏輯，集成度高、靈活性好、速度快；採用基於386ex的嵌入式系統及基於vxworks的嵌入式實時操作系統，取代單片機系統及其編程，提高了系統的整體性能，減輕了硬體設計的負擔，且使系統研發的延續性好。
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