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Method for realizing intelligent degradation of data cached in SSD (Solid State Disk) of storage system

A technology for caching data and storage systems, applied in the field of intelligent data degradation of SSD caches in storage systems, can solve problems such as SSD cache pollution, and achieve the effects of ensuring efficient utilization, improving storage system performance, and reducing cache pollution

Inactive Publication Date: 2014-04-23
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is to solve the pollution problem of the SSD cache, how to reduce the outdated data in the cache, and reduce the degree of cache pollution, so as to improve the effective utilization of the limited SSD space and cache the most valuable data; the other is to solve the performance brought by the passive downgrade strategy The question is, how to adopt an effective strategy, turn passive into active and separate the dependence of downgrade operation on upgrade operation, solve the problem of SSD read and write characteristics, and improve the overall performance of the cache

Method used

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  • Method for realizing intelligent degradation of data cached in SSD (Solid State Disk) of storage system
  • Method for realizing intelligent degradation of data cached in SSD (Solid State Disk) of storage system
  • Method for realizing intelligent degradation of data cached in SSD (Solid State Disk) of storage system

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Embodiment Construction

[0030] Below with reference to accompanying drawing, the present invention is further described by specific embodiment:

[0031] The embodiment of the present invention is very simple, and only needs to install the system module program of the present invention in the LINUX kernel.

[0032] According to the present invention, the SSD cache system can automatically realize the intelligent downgrade of the cached data. When the storage system needs to downgrade the cached data, the SSD cache system will intelligently and actively complete the identification and downgrade operation of the downgraded data, satisfying the data intelligent downgrade of the SSD cache system characteristics.

[0033] A method for intelligently degrading data in an SSD cache of a storage system. The method supports intelligent downgrading of SSD cache data in different operating systems.

[0034] The method adopts a set of cache data intelligent downgrade strategies, utilizes a cache data intelligent ...

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Abstract

The invention discloses a method for realizing intelligent degradation of data cached in an SSD (Solid State Disk) of a storage system. The method comprises the following steps: identifying and counting the degradation characteristic attributes of cached data by adopting a set of intelligent cached data degrading strategy and using an intelligent cached data degrading thread; when a degradation condition is satisfied, actively completing degrading operation of the cached data according to an intelligent degradation algorithm, and transferring data blocks needing to be degraded from an SSD cache into an HDD (Hard Disk Drive), thereby realizing active degradation of the cached data, lowering the cache poisoning and effectively using an SSD cache space. By adopting the method, the cache poisoning can be lowered greatly, data in the cache are hottest data, efficient utilization of the SSD cache space is ensured, the throughput of the storage system is increased, the response time is shortened, and the performance of the storage system is improved integrally.

Description

technical field [0001] The invention relates to a method for intelligently degrading data in an SSD cache of a storage system, which is usually used in a storage system and aims to provide a method for intelligently degrading data in an SSD cache. technical background [0002] With the progress of today's society, more and more data information needs to be processed, and the amount of data is growing explosively. This brings many problems to the traditional storage system. Traditional storage systems generally use mechanical hard disks (HDDs), and the performance of traditional storage systems has become a bottleneck. In the past two years, SSD, that is, solid-state storage hard disk, has begun to rise. On the one hand, SSD itself has the characteristics of fast random access, low power consumption, ultra-light and ultra-thin, and low failure rate (non-mechanical components). On the other hand, due to technological development, SSD has gradually solved the problem of smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
Inventor 温源张宇徐旸
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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