Segment-page combined memory management method

Abstract

The invention discloses a segment and page combined memory management method. The method comprises the following steps of S1, obtaining available physical memory on a whole server; s2, reserving one or more sections of continuous physical memories from available physical memories, and adding the reserved continuous physical memories into a section type physical memory resource pool; s3, adding theremaining physical memories, which are not added into the segment type physical memory resource pool, in available physical memories into the page type physical memory resource pool; s4, when the computing component needs the physical memory, applying for the physical memory from the segment type physical memory resource pool through the segment type memory application interface; and S5, when thecommon user program needs the physical memory, the operating system kernel compares the size of the applied physical memory space with the size of the large page supported by the processor. Accordingto the method, through a flexible memory management strategy, the requirement of a special computing component for a large continuous physical memory is met, meanwhile, the memory use requirement ofa common user program is considered, and different memory requirement scenes are flexibly adapted.

Description

technical field [0001] The invention relates to a memory management method for combination of segments and pages, which belongs to the technical field of computers. Background technique [0002] Special accelerated computing components have clear requirements for the use of large blocks of continuous physical memory. First, the required capacity is large, often several GB. Second, high availability. Failure to apply means that computing tasks cannot be deployed, and this situation needs to be avoided as much as possible. In order to meet the above requirements, a large block of memory is usually reserved as dedicated memory for special acceleration components for special management. For example, the current paging memory management of the Linux system can easily lead to fragmentation of memory usage. Even after sorting, it cannot guarantee the successful application of large continuous physical memory. Therefore, in order to meet the application of special acceleration compo...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a memory management method combining segments and pages. The memory management method combining segments and pages solves the needs of special computing components for large continuous physical memory through flexible memory management strategies, and at the same time takes into account common user programs. Memory usage requirements, flexibly adapt to different memory demand scenarios

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