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Method and system for using solid-state disk as cache of computer

A technology of solid-state hard disk and implementation method, which is applied in the storage field, can solve the problems of heavy system burden and large memory occupation of mapping relationship tables, etc., and achieve the effect of improving overall system performance, reducing burden, and reducing occupancy

Inactive Publication Date: 2014-03-26
RAMAXEL TECH SHENZHEN
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Problems solved by technology

Because the mapping relationship table occupies too much memory, usually ranging from hundreds of megabytes to several gigabytes, this brings a heavy burden to the system

Method used

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  • Method and system for using solid-state disk as cache of computer
  • Method and system for using solid-state disk as cache of computer

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] Such as figure 1 As shown, a kind of implementation system 100 of the present invention adopts solid-state hard disk as computer cache memory, comprises mapping table establishment module 10, mapping table preservation module 20, I / O request receiving module 30, search module 40, mapping table management module 50 and I / O operation module 60 . The implementation system 100 is built in the solid state disk and / or the system memory in the form of software.

[0035] The mapping table building module 10 is used to create a cache address mapping table between the disk and the solid state disk a...

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Abstract

The invention belongs to the storage field and provides a method and system for using a solid-state disk as a cache of a computer. The method comprises the steps that a cache address mapping table between a magnetic disc and the solid-state disk serving as the cache is established, the cache address mapping table is saved in the solid-state disk and a part of the cache address mapping table is copied into a memory according to a preset proportion, the solid-state disk receives an I / O operation request which comprises the physical address of the magnetic disk to be operated, and the physical address of the solid-state disk corresponding to the physical address of the magnetic disk to be operated is searched for in the cache address mapping table saved in the memory and the solid-state disk. Therefore, occupation of a system memory can be reduced, the overall burden of a system is relieved on the premise that little performance is sacrificed, and the overall performance of the system is improved.

Description

technical field [0001] The invention relates to the field of storage, and more specifically relates to a method and system for implementing a solid-state hard disk as a computer high-speed cache. Background technique [0002] Solid State Disk (SSD) is a new generation of storage devices based on standard NAND Flash and other non-volatile storage media. It is completely semiconductor, has no mechanical structure, has low power consumption, no noise, anti-vibration, Heat and other characteristics, there is no disk seek time, data access speed is fast, data throughput and IOPS can reach thousands of times that of traditional hard disks. Cache software is a software implementation scheme that uses a smaller-capacity and faster-speed memory to cache a larger-capacity and slower-speed memory. According to the principle of program locality, frequently used data only accounts for a small part of the overall data. A small part, so caching software can bring faster response speed to ...

Claims

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Application Information

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IPC IPC(8): G06F12/08G06F12/0873
Inventor 王志波
Owner RAMAXEL TECH SHENZHEN
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