Optimization method and system of disk cache system

Abstract

The invention provides an optimization method of a disk cache system. The optimization method comprises the following steps: determining a historical access frequency of each file of a first mechanical hard disk of the disk cache system; determining the files, the historical access frequencies of which exceed a predetermined threshold value, as hot files; continuously writing all the files in the first mechanical hard disk in a second mechanical hard disk, wherein relative to the residual files except the hot files in all the files, file data of the hot files is preferentially written in the second mechanical hard disk from a disk outer channel to a disk inner channel; generating a disk mirror image on the basis of the file data in the second mechanical hard disk in which all the files are continuously written; covering the files in the first mechanical hard disk by utilizing the disk mirror image. Embodiments of the invention furthermore provide a streaming media file distribution system. According to the optimization method the fragment arrangement of the files of the disk cache system is realized, and the hot files and cold files are stored separately, so that the response speed of the hot files in the disk cache system is enhanced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of computer storage, and in particular to a method and system for optimizing a disk cache system. Background technique [0002] With the rapid development of computer technology, modern society has entered the network era, and computers are the carriers and tools of the network. People have higher and higher requirements for the computing speed and functions of computers. In order to meet these requirements, computers must not only start from software products In order to improve performance, corresponding improvements should be made in hardware storage to adapt to more and more diverse functional requirements. [0003] During the operation of the computer, some disk fragments will be generated. After a long time, disk fragmentation will cause poor system performance, such as slowing down when running programs, browsing the web, and storing files. Therefore, people need to use disk...

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Problems solved by technology

[0005] First of all, because access operations are almost impossible during disk defragmentation, for files with too little remaining disk space or severely fragmented files, the defragmentation time is very long and the defragmentation effect is poor, even because there is not enough free storage space, and it cannot be defragmented at all; moreover, according to the user's access frequency to disk files, disk files can be divided into hot files with frequent operations and cold files with infrequent operations. The method cannot achieve partition storage of hot files and cold files, and hot files are more in line with the operating habits of disk users, so when disk users read multiple hot files, due to the discontinuity of the hot file storage space , which increases the seek time and seriously affects the user experience of disk reading

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