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Storage system and method for reorganizing data to improve prefetch effectiveness and reduce seek distance
Storage system and method for reorganizing data to improve prefetch effectiveness and reduce seek distance
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机译:用于重组数据以提高预取效率并减小查找距离的存储系统和方法
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摘要
A method for reorganizing data in a storage device for improved performance is provided where the device stores data as data units each associated with a sequential address. The method for reorganizing data includes allocating a reorganization region capable of storing N units and grouping the data units into a plurality of extents each having a generally large number of units. The method further includes sorting the extents based on the frequency of request of the units in the extents and copying N most frequently requested units from the sorted extents into the reorganization region while preserving the order of the sorted extents and the order of the sequential addresses of the units in each extent. The method also includes servicing requests for data using data in the reorganization region.
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