SSD Cache filling method and device

A filling method and filling device technology, applied in the field of storage, can solve the problems of increasing the number of readback times, increasing the number of random disk commands, affecting business performance and filling speed, etc., so as to improve filling speed, improve random read performance, and reduce random The effect of command requests

Active Publication Date: 2014-11-05
ZHEJIANG UNIVIEW TECH CO LTD
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Problems solved by technology

Since the block size of SSD Cache is fixed and the same, but the size of business commands is different, it will inevitably lead to an increase in t

Method used

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  • SSD Cache filling method and device

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] The present invention provides an SSD Cache filling device in a virtualized environment. The following uses software implemented in a computer as an example for illustration, but the present invention does not exclude other implementations such as hardware or logic devices. Such as image 3 As shown, the computer hardware environment in which the device operates includes CPU, memory, non-volatile memory and other hardware. The device acts as a virtual device on a logical level on the computer, and it runs through the CPU on the computer. The device includes a Block configuration unit and a Block filling unit. Please refer to Figure 4 , the use and operation process of the device includes the following steps:

[0021] Step 101, the Block configuration unit divides the SSD Cache into several blocks of different sizes;

[0022] Step 102, the block filling u...

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Abstract

The invention provides an SSD Cache filling method and device which can be applied to storage equipment. The method comprises the steps of dividing an SSD Cache into a plurality of Blocks with different sizes; according to the size of a data block to be filled, selecting the Block with the most similar size as the data block to be filled for filling the data block to be filled, wherein the size of the data block to be filled is smaller than or equal to the size of the selected Block. According to the SSD Cache filling method and device, the size of the Block needed for filling is selected according to the magnitude of a service command, the backward reading frequency of a magnetic disk is reduced to the greatest extent, and the SSD Cache filling speed is improved.

Description

technical field [0001] The present invention relates to the field of storage technology, in particular to a SSD Cache filling method and device. Background technique [0002] In the current common storage products, SSD (Solid State Disk, solid state drive) hard disk is used as the secondary read cache of the system to improve the random read performance of the array. Usually, the SSD hard disk here is called SSD Cache (cache memory). Since the read cache of the storage device itself is usually relatively small, generally only a few hundred MB to 1GB, and the space of the SSD Cache has reached 1TB, therefore, if the data is read out in advance and filled into the SSD Cache, then the data will be read. When accessing, read directly from the SSD Cache, which can significantly shorten the response time and improve the read performance. [0003] Existing technical solutions such as figure 1 As shown, when the data enters the read cache and the read cache is exhausted, the SSD C...

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Application Information

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IPC IPC(8): G06F3/06G06F12/08G06F12/0877
Inventor 吴会堂石岩姚婷
Owner ZHEJIANG UNIVIEW TECH CO LTD
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