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Lockless concurrent IO processing method and device

A processing method and IO request technology, applied in the field of storage systems, can solve problems such as large memory overhead and decreased CPU efficiency

Active Publication Date: 2020-09-18
MEMBLAZE TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the RAID system creates thousands of RAID Arrays (arrays) in a resource pool composed of SSD drives, this method will create thousands of threads, resulting in huge memory overhead
Moreover, the overhead of thread scheduling and switching can lead to a sharp drop in CPU efficiency

Method used

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  • Lockless concurrent IO processing method and device
  • Lockless concurrent IO processing method and device
  • Lockless concurrent IO processing method and device

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Embodiment Construction

[0074] Embodiments of the present application are described in detail below, and the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.

[0075] figure 1 The architecture of the storage system according to the embodiment of the present application is shown. A storage system according to the present application includes a computer or server (collectively referred to as a host) and a plurality of storage devices (eg, drives) coupled to the host. Preferably, the drive is a solid state drive (SSD). Optionally, a disk drive may also be included in the embodiment according to the present application.

[0076] The storage resources provided by each drive are ...

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Abstract

The invention provides a lockless concurrent IO request processing method and device. According to the IO request processing method of a storage system, the storage system comprises a plurality of virtual storage disks, each virtual storage disk comprises a plurality of logic address areas, logic addresses of the logic address areas are not overlapped, the method comprises the steps that a first IO request is received, and the first IO request has access to the first logic address areas; determining a first thread according to the first logic address area, and enabling the first thread to process the first IO request; receiving a second IO request, wherein the second IO request accesses a second logic address area; and determining a second thread according to the second logic address area,and enabling the second thread to process the second IO request.

Description

technical field [0001] The present application relates to storage system technologies, and in particular to a storage system IO request processing method and device. Background technique [0002] A solid state drive (SSD, Solid State Drive) is made of a semiconductor storage medium and has superior read and write performance. However, although the performance of the SSD drive is high, the data reliability and the cost of the SSD drive limit the popularization of the SSD disk. In the prior art, a RAID (Redundant Array of Independent Disks, Redundant Array of Independent Disks) technology is used to ensure the reliability of SSD drive data, and also improve the use efficiency of the SSD drive, thereby reducing costs. [0003] However, the RAID technology lengthens the IO path and increases the computing overhead. In order to give full play to the performance of multiple SSD drives, multi-core and multi-CPU technology is usually used at present. As long as each CPU is allowe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0622G06F3/0629G06F3/0665G06F3/0689G06F3/06
Inventor 易正利吴忠杰
Owner MEMBLAZE TECH BEIJING