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Hot spot data detection method and device

A technology of hot data and detection methods, which is applied in electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of improving access performance, improving overall performance, and enhancing efficiency

Active Publication Date: 2013-12-25
INSPUR BEIJING ELECTRONICS INFORMATION IND
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In the existing methods, only the frequency of access is considered. In actual applications, due to the correlation of application data reading and writing, only considering the frequency of IO and the granularity of blocks has certain limitations.

Method used

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  • Hot spot data detection method and device

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Embodiment Construction

[0029] It is considered in this application that, for example, in the application of library management, the information including book title, publication date and serial number is entered for the first time, and in the specific book borrowing activities, the name, title and serial number of the borrower are recorded. , every time you inquire about the use of this book in the future, the information of the borrower will be indexed at the same time, so that the two types of data are related. In this application, when identifying hot data, the correlation between data is considered.

[0030] This application considers the correlation between data blocks, such as data block A, data block B, data block C and data block D have the same access frequency, and there is a correlation between data block A and data block B, such as in When data block A is accessed, data block B is also accessed, so it is considered that data block A and data block B have a higher priority, and data block ...

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Abstract

The invention discloses a hot spot data detection method and device. The method comprises the following steps: detecting the value of a data block k according to a correlation coefficient between the data block k and one or more data blocks and the reading-writing frequency of the data block k, wherein the correlation coefficient represents the reading-writing correlation degree of two data blocks; determining whether the data block k is a hot spot datum or not according to the value of the data block k and a preset data migration strategy. According to the method, the value of the data block is determined according to the correlation coefficient of the data block, and a determination on whether the data block is a hot spot datum or not is made according to the value of the data block, so that hot spot data detection is more accurate and reliable than the conventional method, the efficiency of data migration is increased, migration of hot spot data in the inner magnetic track and the outer magnetic track of a magnetic disk according to values is realized, the access performance of the magnetic disk can be improved effectively, and the overall performance of a magnetic disk array is enhanced greatly.

Description

technical field [0001] The invention relates to the field of disk arrays, in particular to a hotspot data detection method and device. Background technique [0002] The demand for large-capacity storage in practical applications prompts the birth of RAID (Redundant Arrays of Inexpensive Disks, disk array) technology, and forms disk array products. With the continuous development of cloud computing, cloud storage and other technologies, the information storage capacity is growing explosively, and the demand for disk arrays is increasing. As a shared resource, the storage system needs to provide services to many different types of applications at the same time. Different types of applications have different load characteristics and performance requirements. Many applications have high requirements for random IO concurrency when accessing the storage system. In order to meet the application requirements and improve the storage system's ability to process IO requests per second...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 李伟国吕烁
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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