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A method and device for reducing write latency under gc of solid-state hard disk

A solid-state hard disk, purpose technology, applied in the field of hard disk garbage collection, can solve the problem of waste of master dataframe resources and so on

Active Publication Date: 2021-09-10
SUZHOU METABRAIN INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for reducing the writing latency of a solid-state hard disk under GC, so as to solve the problem of wasting resources of the main control data frame in the prior art

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  • A method and device for reducing write latency under gc of solid-state hard disk
  • A method and device for reducing write latency under gc of solid-state hard disk

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Embodiment Construction

[0032] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the...

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Abstract

The embodiment of the present invention discloses a method and device for reducing write latency in a solid-state hard disk under GC. The method includes separately counting the number of different data blocks, and the different data blocks include GC source blocks, GC destination blocks, and free blocks provided for LKM ; Perceive the write pressure and GC efficiency of HOST according to the number of different data blocks, and calculate the arbitration value; send the arbitration value to LKM, and LKM allocates data frame resources for GC writing according to the arbitration value. The invention senses the writing pressure of the HOST, measures the writing pressure and GC efficiency, and allocates appropriate data frame resources for the GC based on this, improves resource utilization, reduces writing latency, and improves product performance.

Description

technical field [0001] The invention relates to the technical field of hard disk garbage collection, in particular to a method and device for lowering write latency of a solid-state hard disk GC (Garbage Collection, garbage collection). Background technique [0002] The garbage collection of SSD (Solid State Drives, solid state drive) is actually equivalent to the defragmentation of solid state drives. It is an automatic processing mechanism of the main control chip of the solid state drive itself and does not depend on the operating system. Since the erasure of SSD solid-state disk is based on data blocks, garbage collection is also performed in units of data blocks, that is, all valid pages in a data block are merged into a new data block, and the old pages are merged into a new data block. Data blocks are erased. Garbage collection must not only ensure sufficient free data blocks for the host to write, but also minimize the occupation of SSD master control resources as m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/02G06F3/06
CPCG06F3/0631G06F3/064G06F12/0253G06F2212/1024G06F2212/1028
Inventor 王鑫
Owner SUZHOU METABRAIN INTELLIGENT TECH CO LTD
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