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IO request processing method and device

An IO request and processing method technology, applied in the information field, can solve the problems of small RAM space, waste of system resources, and low processing efficiency of IO requests by SSD, so as to improve processing efficiency and reduce waste.

Active Publication Date: 2017-06-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small RAM space, usually dozens to hundreds of kB, the processing efficiency of SSD for IO requests is low, and the high-speed read and write performance of NAND flash is not fully utilized, resulting in waste of system resources

Method used

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  • IO request processing method and device

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] In order to make the advantages of the technical solution of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Embodiments of the present invention provide a method for processing IO requests, such as figure 1 As shown, the method includes:

[0026] 101. The SSD controller receives first IO request information sent by the host.

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Abstract

The embodiment of the invention discloses a method and device for processing an IO request, relates to the field of information technology, can improve the processing efficiency of an SSD for an IO request, and reduce waste of system resources. The method includes: first receiving the first IO request information sent by the host, and then judging whether the second IO request information is stored in the first storage structure, and if the second IO request information is stored in the first storage structure information, release the second IO request information, and finally store the second IO request information in the second storage structure, and store the first IO request information in the first storage structure.

Description

technical field [0001] The present invention relates to the field of information technology, in particular to an IO request processing method and device. Background technique [0002] Commonly used data carriers in the storage field are mechanical hard disks and solid state drives (SSDs, Solid State Drives). Due to the advantages of high performance, low latency, low power consumption, and strong environmental adaptability, SSDs are also continuously decreasing in cost. SSD application scenarios are also becoming more and more extensive. [0003] SSD is generally composed of a controller and a NAND flash (memory) chip. At present, after receiving an IO request sent by the host, the SSD controller needs to apply for memory space to store the IO request information. Among them, due to performance requirements, generally the received The IO request information is stored in random access memory (RAM, Random Access Memory) with a faster access speed. However, due to the small R...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 王震宇吕建涛陈建辉
Owner HUAWEI TECH CO LTD