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Junk data recycling method and storage device

A technology of garbage data, storage devices, applied in the computer field

Active Publication Date: 2014-02-12
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a method for recycling garbage data, aiming to solve the problem of how to improve the efficiency of garbage collection

Method used

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  • Junk data recycling method and storage device
  • Junk data recycling method and storage device

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Embodiment Construction

[0100]The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0101] refer to figure 1 , figure 1 It is a flowchart of a method for recycling garbage data provided by an embodiment of the present invention. like figure 1 As shown, the method includes the following steps:

[0102] Step 101, respectively recording the data amount of the first data at the current time in each segment of the storage device and the change amount of the first data within a preset time before the current time; the first data is garbage data or For valid data, the...

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Abstract

The embodiment of the invention provides a junk data recycling method and a storage device. A data volume of first data at current time and variable quantity of the first data within a preset period before the current time in each segment of the storage device are recorded respectively; according to the data volume of the first data and the variable quantity of the first data in each segment, a predicted value of the first data is calculated; according to the predicted value of the first data in each segment, segments in which junk data need recycling are determined, junk data in the segments with more junk data needing recycling and a lower junk generating speed are recycled preferentially, and therefore efficiency of recycling junk data is improved.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method and a storage device for recycling garbage data. Background technique [0002] After a general storage device writes data, it will find the corresponding address according to the Logical Block Address (LBA), and then write the data into it. If the addresses between multiple input and output commands (Input Output, IO) are connected, it is sequential IO, otherwise it is random IO. [0003] When the Hard Disk Drive (HDD) in the storage device wants to read a piece of data, the magnetic head must first move to the track where the data is located, and the magnetic head moves radially to the top of the track where the target sector is located. This period of time is called Seek time, about 10 milliseconds on average. After finding the target track, through the rotation of the platter, the target sector is turned to the bottom of the magnetic head. This period is called the rotation...

Claims

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Application Information

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IPC IPC(8): G06F12/02G06F3/06
CPCG06F12/0238G06F2212/1016G06F2212/7201G06F2212/7205G06F3/0619G06F3/0665G06F3/0689G06F12/0261G06F2212/702
Inventor 林春恭
Owner XFUSION DIGITAL TECH CO LTD
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