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Method for data consistency of heterogeneous system

A heterogeneous system and consistent technology, applied in the field of big data processing, can solve problems such as slow update speed

Inactive Publication Date: 2018-01-16
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

Using the copy-on-write technology, each update operation copies the original data and writes the update to a new location. This method reduces the overhead of writing logs, but since the data in the file system is indexed in a tree structure, If a data block is copied realistically, it will cause the update operation to spread up layer by layer until the root of the tree
update too slow

Method used

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Embodiment Construction

[0017] The content of the present invention is described in more detail below:

[0018] The present invention mainly considers the problem of ensuring data consistency under the condition that different media coexist in a heterogeneous hybrid memory system. In the heterogeneous hybrid memory system, the advantages of large capacity, low power consumption, and non-volatility of the new non-volatile memory can be brought into play. At the same time, it can be integrated with the existing memory DRAM to build a highly reliable and large-capacity system. The heterogeneous hybrid memory system is mainly based on the fusion of DRAM, Flash and PCM. In the heterogeneous hybrid memory system, the three media of DRAM, Flash and PCM will be uniformly addressed and managed in a unified manner. The schematic diagram of unified memory addressing in heterogeneous hybrid memory system is as follows: figure 1 shown. The heterogeneous hybrid memory system uses DRAM as the Cache of the non-vo...

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Abstract

The invention provides a method for data consistency of a heterogeneous system, and belongs to the technical field of big data processing. The method mainly comprises the steps of a smaller data consistency policy and a larger data consistency policy; according to the smaller data consistency policy, different updating policies are adopted for different mediums; according to the larger data consistency policy, if most data of the system needs to be updated, valid data in data blocks to be updated is directly copied, and updating operation can be conducted at a time. The space consumption is reduced, and the data updating speed is prevented from being too low.

Description

technical field [0001] The invention relates to big data processing technology, in particular to a method for data consistency in heterogeneous systems. Background technique [0002] With the rapid development of the Internet, the amount of data has increased dramatically, and big data processing has put forward high demands on memory speed, capacity, energy consumption and reliability. Traditional DRAM media faces great challenges in handling big data. With the advent of nonvolatile memory, new heterogeneous hybrid memory systems for extending computer memory have received much attention. The new type of non-volatile memory has the characteristics of non-volatility, low power consumption, and fast reading and writing speed compared to disk. Processing large data in a heterogeneous hybrid memory system will improve efficiency. However, data consistency needs to be guaranteed when data is loaded or written in a heterogeneous hybrid memory system. [0003] Traditional data ...

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Application Information

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IPC IPC(8): G06F17/30
Inventor 郭美思
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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