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Lock-free io processing method and device thereof

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

Active Publication Date: 2020-07-31
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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  • Lock-free io processing method and device thereof
  • Lock-free io processing method and device thereof
  • Lock-free io processing method and device thereof

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Embodiment Construction

[0074] Embodiments of the present invention are described in detail below, and the embodiments are shown in the drawings, wherein the same or similar reference numerals denote 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0075] figure 1 The architecture of the storage system according to the embodiment of the present invention is shown. A storage system according to the present invention 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 invention.

[0076] The storage resources provided by each drive are maintained through a stor...

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Abstract

The invention discloses an IO request processing method and device of a storage system. The storage system includes multiple virtual storage disks, and the virtual storage disks include multiple logical address areas. The disclosed IO request processing method includes: receiving a first IO request, wherein the first IO request accesses a first logical address area; determining a first thread according to the first logical address area, so that the first thread processes the first IO request. The embodiments of the present invention can allow each CPU to fully work concurrently on the premise of ensuring data reliability, give full play to the performance of the solid-state drive, and ensure linear scalability of system performance.

Description

technical field [0001] The invention relates to storage system technology, 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 allowed to process IO ...

Claims

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Application Information

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