【摘要】：隨著存儲技術(shù)的不斷發(fā)展，各種新型存儲器件不斷涌現(xiàn)。固態(tài)盤作為新型存儲器件，，隨機(jī)讀寫能力遠(yuǎn)勝于硬盤，但其價格太高。而硬盤作為傳統(tǒng)存儲器，單盤容量越來越大，但是其數(shù)據(jù)存取速度卻進(jìn)步緩慢，這一性能瓶頸越來越突出。在固態(tài)盤以其自身的性價比還不足以顛覆傳統(tǒng)機(jī)械硬盤地位的情況下，混合存儲作為一個過渡階段的產(chǎn)物將會發(fā)揮很好的作用�；旌洗鎯Τ浞职l(fā)揮不同存儲器件各自的特點，來提升整個系統(tǒng)的性能。如何根據(jù)系統(tǒng)的特點，結(jié)合不同存儲器件各自的優(yōu)勢，來確定遷移算法，選取遷移集合，是混合存儲系統(tǒng)中的一個熱點研究問題。 課題深入分析了固態(tài)盤與硬盤各自的性能特點，通過測試歸納出了兩者各自適合哪種訪問模式的文件，提出了一種基于文件訪問隨機(jī)度與熱度的混合存儲系統(tǒng)。通過收集文件的訪問歷史信息，為每個文件抽象出訪問隨機(jī)度與熱度，提出了隨機(jī)度與熱度計算算法，利用隨機(jī)度與熱度為每個文件計算出文件價值，用以衡量將該文件遷移到固態(tài)盤上能夠為整個系統(tǒng)帶來多大的性能提升。然后利用文件價值提出了遷移算法，確定了遷移集合。最后使用用戶態(tài)文件系統(tǒng)工具來對遷移后的文件進(jìn)行訪問重定向。 實驗測試表明，在綜合考慮了訪問隨機(jī)度與熱度以后，整個混合系統(tǒng)有10%左右的性能提升，而且在系統(tǒng)設(shè)計的時候?qū)虘B(tài)盤的讀和寫進(jìn)行了區(qū)分，盡量減少了對固態(tài)盤的寫操作，在一定程度上起到了保護(hù)固態(tài)盤的作用。
[Abstract]:With the development of storage technology, new types of memory devices are constantly emerging. Solid-state disk as a new type of memory device, random read-write capability is far from the hard disk, but its price is too high. As a traditional memory, the disk capacity of the hard disk is increasing, but the data access speed of the hard disk is slow, and the performance bottleneck is becoming more and more prominent. In the case of a solid-state disk that is not sufficient to subvert the traditional mechanical hard disk status at its own cost performance, the hybrid storage will play a very good role as a product of a transition phase. The hybrid storage gives full play to the respective characteristics of the different memory devices to improve the performance of the overall system. How to determine the migration algorithm based on the characteristics of the system and the respective advantages of different memory devices, and select the migration set is a hot spot research problem in the hybrid storage system. In this paper, the performance characteristics of the solid-state disk and the hard disk are analyzed in detail. The paper presents a kind of mixed storage system based on the random degree and the heat of the file access. By collecting the access history information of the file, the random degree and the heat are abstracted for each file, a random degree and a heat calculation algorithm are proposed, and the file price is calculated for each file by using the random degree and the heat. Value to measure how much performance it can bring to the entire system on a solid-state disk And then the migration algorithm is proposed by using the value of the file, and the migration set is determined. Close. Finally, use the user-state file system tool to access the migrated files. The experimental results show that, after the access to the random degree and the heat is considered, the performance of the whole hybrid system is improved by about 10%, and the reading and writing of the solid-state disk is distinguished when the system is designed so as to minimize the damage to the solid-state disk. The writing operation, to a certain extent, has the function of protecting the solid-state disk,
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP333

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 吳一民;劉偉安;;基于Fuse的用戶態(tài)文件系統(tǒng)的設(shè)計[J];微計算機(jī)信息;2010年06期

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