A Heterogeneous Memory Management Method Based on Page Heat

Abstract

The invention discloses a heterogeneous memory management method based on page heat, which is characterized in that it comprises the following steps: (1) for the memory pages of the heterogeneous memory, collecting the total read-write data and partial read-write data of the memory pages being accessed and the latest read and write data are stored in a multi-level queue to form a page access record queue; (2) determine the page heat value and heat value according to the partial read and write and recent read and write data, and reserve N page heat values ​​in order to exceed the preset The page with the hotness value threshold is regarded as a hot page and the page whose coldness value of N pages exceeds the preset coldness value threshold is regarded as a cold page; (3) select any cold page for each hot page to combine, and estimate the energy saving value, according to It sorts in descending order, selects hot and cold page matching, and migrates pages according to the matching results, reducing energy consumption. The method can make full use of the high performance of the DRAM and improve the overall performance of the heterogeneous memory system.

Description

technical field [0001] The invention belongs to the field of computer memory management, and more specifically relates to a heterogeneous memory management method based on page heat. Background technique [0002] With the rapid development of science and technology, the structure of modern computers is becoming more and more complex, and the energy consumption is also increasing. Memory is an important part of the computer system structure. It accounts for an increasing proportion of machine energy consumption. Reducing the energy consumption of the memory part has become a research hotspot. [0003] In the traditional computer system structure, the memory is composed of dynamic random access memory (DRAM), which is a kind of volatile memory, which needs to be refreshed periodically to ensure the accuracy of data, which increases the energy consumption of the system. Recently, a new type of storage device—phase-change memory (PCM) has emerged, which is a non-volatile stora...

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a heterogeneous memory management method based on page heat, the purpose of which is to solve the problem of heterogeneous memory by screening hot and cold pages and reasonably migrating them in heterogeneous memory. Technical issues with high energy consumption

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