一种嵌入式设备的Flash数据资源回收策略  

Flash Data Resource Recovery Strategy for Embedded Devices

作　　者：宋彦锋 徐云松 张荣良 杨芳 Song Yanfeng;Xu Yunsong;Zhang Rongliang;Yang Fang(XJ Electric Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]许继电气技术中心,许昌461000

出　　处：《单片机与嵌入式系统应用》2018年第11期9-12,共4页Microcontrollers & Embedded Systems

摘　　要：介绍了一种嵌入式设备的Flash资源回收策略。该策略的实现需要嵌入式系统支持多任务,在后台实现两个任务,一个用来统计CPU占有率的CPU负载检测任务,一个是Flash资源回收检测任务。Flash垃圾回收策略能够自动根据CPU负载情况、资源剩余情况来调整垃圾后台回收的频率,并在Flash资源严重不足的情况下报警,能够有效避免设备在资源不足的环境下运行造成大的损失,保证了设备运行的安全性。In the paper,a kind of embedded device Flash resources recovery strategy is proposed.The implementation of the strategy requires the embedded system supports multiple tasks:two tasks are implemented in the background,and one is the CPU load detection task which is used to calculate the CPU share,the other is Flash resources recovery testing task.The Flash garbage recovery strategy can automatically adjust the frequency of garbage collection based on CPU load and resource surplus,and alarm when Flash resources are seriously insufficient.It can effectively prevent the equipment from running in an environment with insufficient resources and resources,which can cause great loss and ensure the safety of equipment operation.

关 键 词：嵌入式设备 Flash资源回收 时间粒度滑动窗口 CPU负载 

分 类 号：TP317[自动化与计算机技术—计算机软件与理论]