Memory management method for alleviating fragment generation

Abstract

The invention provides a memory management method for alleviating fragment generation, and belongs to the field of computers. The method comprises two steps: 1, a cache management module is used for releasing repeat requests, and 2, memory pool management is used for actual memory allocation and recovery. The memory management method adopts a method of combining memory repeated use cache management and memory pool management to manage the memory, so that the memory allocation speed is accelerated, the memory allocation efficiency is improved, efficient and quick memory allocation is realized, and the generation of the memory fragments is inhibited in real time.

Description

technical field [0001] The invention relates to the computer field, in particular to a memory management method for alleviating fragmentation. Background technique [0002] Memory management should be allocated efficiently and quickly, and can effectively suppress the generation of fragmentation. Memory fragmentation is divided into internal fragmentation and external fragmentation. Because all memory allocations must start at addresses divisible by 4, 8, or 16 (depending on the processor architecture) or because of the limitations of the MMU's paging mechanism, the memory allocation algorithm can only allocate memory blocks of a predetermined size to customers. Suppose when a client requests a 43-byte memory block, because there is no suitable size memory, it may get 44 bytes, 48 ​​bytes, etc. slightly larger bytes, so it is rounded by the required size. The excess space is called internal fragmentation; frequent allocation and reclaiming of physical pages will cause a ...

AI Technical Summary

Problems solved by technology

Because the newly released memory block cannot satisfy the new request, only 20 units of memory blocks can be allocated starting from 15

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