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Method for attenuation of heat data

A technology of hot data and data, applied in the field of hot data attenuation based on hot data block feedback, which can solve problems such as misjudgment of hot and cold data

Inactive Publication Date: 2011-05-25
ETRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because of the shared counter, the problem of misjudgment of hot and cold data will occur

Method used

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  • Method for attenuation of heat data
  • Method for attenuation of heat data
  • Method for attenuation of heat data

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Experimental program
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Embodiment Construction

[0015] Please refer to figure 1 , figure 1 It is a schematic diagram illustrating a thermal data area 100 for attenuating thermal data. The hot data area 100 includes a hot data block ring (ring) 102 , a cold / hot data identification engine (cold / hot data identify engine) 104 and a plurality of counters 106 . The hot data block ring 102 is a plurality of blocks in a flash memory, wherein each block includes a plurality of storage pages, and each storage page is used to store a piece of hot data. Hot data is written into the hot data block ring 102 in a cyclic and sequential manner. The cold / hot data identification engine 104 is used to decay the number counted by the counter 106 corresponding to a logical block address according to a logical block address.

[0016] Please refer to figure 2 , figure 2 A flowchart illustrating a method for attenuating thermal data according to an embodiment of the present invention. figure 2 method to use figure 1 The description of the...

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Abstract

The invention discloses a method for the attenuation of heat data, which comprises the following steps: reserving a plurality of blocks in a flash memory; writing several batches of data into the plurality of blocks in a circulating and sequential manner; when heat data are going to be rewriten into the plurality of blocks at the end of each cycle, if heat data of a storage page in an attenuation zone are not updated, sending the location of a logic block corresponding to the heat data of the storage page to a cold / heat data recognization engine; and attenuating a number counted by a counter corresponding to the location of the logic block by the cold / heat data recognization engine according to the location of the logic block.

Description

technical field [0001] The present invention relates to a hot data attenuation method, in particular to a hot data attenuation method for feeding back based on hot data blocks. Background technique [0002] In the prior art, it is judged whether the data is hot data or cold data according to the number of times the data location (address) is accessed within a period of time. Each data location will have a corresponding counter, which counts the number of times the data location is accessed within a period of time. Therefore, the prior art requires a large static random access memory (SRAM) to store the result of the counter, and since each data location has a corresponding counter, it takes a considerable amount of time to process all the counters . However, the existing count decays the counts of all counters every predetermined period of time (for example, after writing data 5000 times), and then decays the counts of all counters after a predetermined period of time. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/02G06F11/00
CPCG06F11/3471G06F2201/88G06F12/0246G06F2212/7205
Inventor 李弘民
Owner ETRON TECH INC