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    • 5. 发明授权
    • Disk block allocation optimization methodology and application
    • 磁盘块分配优化方法和应用
    • US06742080B1
    • 2004-05-25
    • US08885325
    • 1997-06-30
    • Knut GrimsrudRick Coulson
    • Knut GrimsrudRick Coulson
    • G06F1200
    • G06F3/0611G06F1/3268G06F3/0613G06F3/064G06F3/0676G06F11/3419G06F11/3485G11B27/034Y02D10/154
    • An apparatus is equipped with a disk block allocation optimization function for generating, if possible, an alternative disk block allocation for a current disk block allocation that will yield improved overall access time for a sequence of file accesses. The function includes logic for tracing the sequence of logical file accesses, then mapping the traced logical file accesses to physical disk blocks to determine the current disk block allocation, logic for generating the alternative disk block allocation, if possible, using the physical trace results, and logic for effectuating the alternate disk block allocation, if generated. In one particular embodiment, the logic for generating the alternative disk block allocation employs a random search approach, while in another embodiment, the logic for generating the alternative disk block allocation employs a heuristic approach.
    • 一种装置配备有磁盘块分配优化功能,用于如果可能的话,为当前磁盘块分配生成替代的磁盘块分配,这将为文件访问序列产生改进的整体访问时间。 该功能包括用于跟踪逻辑文件访问序列的逻辑,然后将跟踪的逻辑文件访问映射到物理磁盘块以确定当前磁盘块分配,如果可能,使用物理跟踪结果来生成替代磁盘块分配的逻辑, 以及用于实现替代磁盘块分配的逻辑,如果生成的话。 在一个特定实施例中,用于产生替代磁盘块分配的逻辑采用随机搜索方法,而在另一实施例中,用于生成替代磁盘块分配的逻辑采用启发式方法。