When the disk is initialized, the block size of the storage space to determine, but because of different users or different users of the same file logical record size is different. In the case of a small logical record, if a logical record exclusive to a physical block, then the storage space utilization is not high. Operating system provides logical grouping and decomposition of the record operation is not only conducive to improving the utilization of storage space, but also can reduce the number of input and output operations, improve the efficiency of computer systems. This internship helps us master the techniques of grouping and decomposition operations as well as understanding the implementation of grouping and decomposition operations.

cipandechengzuhefenjie.cpp

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