基于动态页面映射的远程交换系统内存管理优化

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关键词：远程交换系统；内存管理；动态页面映射；远程直接内存访问中图分类号：TP333.1 文献标志码：A 文章编号：1001-3695（2025）10-026-3099-07doi： 10.19734/j. issn.1001-3695.2025.03.0076

Memory management optimization for remote swap system based on dynamic page mapping

LiYuqi，WangXiaoyang，ZhuWenzhe，LiYongkunt （SchoolofComputerScience&Technology，UniversityofScience&TechnologyofChina，Hefei230o27，China）

Abstract：Remote swap system leverages thekernel’spage swap mechanism to transparentlyutilize remote memory，serving asacommonappoachforconstructingdisaggregated memoryarchitecture.However，existing systems typicallpre-aocatethe entirecapacityofremote memorywhencreatingaremote swappartition，esulting in internal fragmentationandreducedmemoryutilization.Toaddress thisisse，thispaper proposedanovel remote memorymanagement method，which dynamically mapped remote pages toactivelyused swap entries insystem，thereby reducing unnecessry memory consumption.This method introducedaneficientinter-node memoryallocationandreclamationmechanism，supportingfine-grained memorymanagement andensuring isolationofmemoryacesacrosscomputenodes.Experimentalresultsdemonstratethatthis methodcanimprove the memory utilization of remote swap partitions'by 5.2% to 89.1% in various scenarios，with only minimal additional overhead.Therefore，this method can effectively enhance the memory management efficiency of remote swap system.

Key words： remote swap system； memory management；dynamic page mapping；remote direct memory access（RDMA）

0 引言

近年来，随着网络带宽的增加、网络延迟的降低以及远程直接内存访问（RDMA）[1]等技术的兴起，研究人员和领先的云服务提供商开始探索分离式内存（disaggregatedmemory）架构[2-4]。（剩余18698字）