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Method and apparatus for dividing buffer memory space and buffer memory controller thereof

A cache space and controller technology, applied in the field of network storage, can solve the problems of reducing system performance, reducing the data hit rate of system read and write speed, and being unable to be used by disk array A3, so as to improve access efficiency, increase read and write speed, Avoid the effect of excess space

Inactive Publication Date: 2010-06-23
NEW H3C TECH CO LTD
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Problems solved by technology

In this way, it often leads to low access efficiency of the network storage control system
For example, see figure 2 , the read and write data volume of disk array A3 is 100KB, and the cache space of A3 cannot meet the data storage requirements of disk array A3, while the read and write data volume of disk array A2 is as small as 5KB, and there is a large amount of remaining cache space in A2 The free space cannot be used by the disk array A3, which reduces the overall read and write speed of the system and the data hit rate of the disk array, resulting in low access efficiency of the network storage control system and greatly reducing system performance

Method used

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  • Method and apparatus for dividing buffer memory space and buffer memory controller thereof
  • Method and apparatus for dividing buffer memory space and buffer memory controller thereof
  • Method and apparatus for dividing buffer memory space and buffer memory controller thereof

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Embodiment Construction

[0024] In order to make the purpose, 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 specific embodiments.

[0025] The invention proposes a method for dividing Cache space. The method is applied in a storage control system. The cache in the storage control system is divided into at least two cache spaces, each cache space corresponds to at least one disk array, and each disk array includes at least one disk. In the method, the access traffic of each disk array is counted within a set time period; according to the access traffic of each disk array within the time period, each part of Cache space corresponding to each disk array is divided.

[0026] image 3 It is a flow chart of dividing Cache space in one embodiment of the present invention. see image 3 , in one embodiment of the present invention, the process of dividing the Cache space sp...

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Abstract

The method comprises: counting the flow rate accessing each disk array in a preset time interval; according to the flow rate accessing each disk array in the time interval, resizing the space of each Cache respectively corresponding to each disk array. The apparatus thereof comprises a host computer processor and a buffer controller.

Description

technical field [0001] The invention relates to network storage technology, in particular to a method and device for dividing cache (Cache) space and a cache controller. Background technique [0002] With the rapid development of information technology, network storage control systems that can provide data storage services have emerged. figure 1 It is a structural diagram of the network storage control system. see figure 1 , the network storage control system mainly includes a disk array (the disk array referred to in this article includes a disk that actually stores data and a disk controller that controls the disk), and a host processor that performs read and write operations. In addition, since the operating frequency of the host processor is much higher than that of the disk array, in order to improve the efficiency of data reading and writing, the network storage control system also includes a cache controller whose operating frequency is between the host processor an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/08H04L12/54G06F12/0871
Inventor 赖守锋刘介良安辉
Owner NEW H3C TECH CO LTD
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