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dc.contributor.author黎忠文
dc.contributor.author郑建仙
dc.contributor.author罗仁泽
dc.date.accessioned2017-11-14T03:19:29Z
dc.date.available2017-11-14T03:19:29Z
dc.date.issued2007-05-15
dc.identifier.citation航空计算技术,2007,(03):67-69,86
dc.identifier.issn1671-654X
dc.identifier.otherHKJJ200703018
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/156696
dc.description.abstract探讨如何把抢占门限应用于具有优先级提升和内存受限的实时系统,并进一步研究了互不抢占组内,linux平台上基于增量检测点的内存备份/恢复的方法及原型系统的实现。原型系统采用了可扩展的链接方式作为检测点文件格式,使得数据更加紧凑有序;在内存的备份操作上,提出了“影子脏位”算法来识别两检测点之间有无被改变的部分。原型实验验证了所提出方法的有效性。
dc.description.abstractAfter analyzing how to apply preemption-threshold-scheduling into real-time systems among which the recoveries of safety tasks may be executed at higher priority levels and the sizes of memories are limited,we research realization methods about memory backuprecovery on the Linux platform based on increment checkpoints for no-preemption task groups.At last,taking the microcomputer interlocking simulation system as an example,prototype experiment of memory backup/recovery has been done on the Linux platform in the lab.Our prototype experiment takes an extendable checkpoint file layout to make data in a file compact.And with regard of memory backup operation,by using a″showdown of dirty-bit″ algorithm to identify the difference between two checkpoints,it implements an increment checkpoint to improve system performance.This experiment has proved the validity of proposed methods.
dc.description.sponsorship广东省自然科学基金(06029667)
dc.language.isozh_CN
dc.subject抢占门限
dc.subject内存管理
dc.subjectEtoC
dc.subject增量检测点
dc.subjectpreemption threshold
dc.subjectmemory management
dc.subjectexecute to completion
dc.subjectincrement checkpoint
dc.title容错实时系统的内存管理优化方案及实现
dc.title.alternativeAn Optimal Scheme for Memory Management in Fault-tolerant Real-time System
dc.typeArticle


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