Method and system for computing fragment rate of magnetic disc

Abstract

The status of the fragment of the magnetic disk can be calculated out rapidly by the invented method and the system. Based on the starting position of the file allocation table and the length of each cluster, the invented method determines whether each cluster possesses the end-of-file mark or whether the continuous segment is pointed to the adjacent area. Thus, the total amount of the not continuous cluster can be obtained to decide the fragment rate of the magnetic disk.

Description

technical field [0001] The invention relates to a method and system for calculating disk fragmentation rate, in particular to a method and system for rapidly calculating disk fragmentation rate by using a file configuration table. Background technique [0002] Data storage space on a disk is divided into a number of connected units called configuration units or clusters. When writing a file to disk, the file will be segmented into discontinuous blocks of cluster size. When all blocks of the file are located in adjacent or continuous clusters, they can be accessed quickly because all information all in the same place. [0003] However, once the disk is used for a long time, the usable continuous segment space will become less and less, because when the file is accessed, it will try to find the space of the continuous segment in the disk to store, data modification, copy, Deleting and moving, etc., will result in less and less continuous segment space. Therefore, when a new...

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Problems solved by technology

[0005] However, currently only a few software provide information about disk fragmentation, and most of the calculations of disk fragmentation rate take a long time, which is inconvenient for users to understand, and even most users are unwilling to execute it because it takes too much time. Make the file processing and access efficiency in the disk very low

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