针对数据库的数据访问特点和已有的闪存存储管理方法的不足,提出一种新的自适应的闪存存储管理方法AFS.AFS方法将逻辑页区分为日志和非日志两种模式,并采用不同的更新方法;同时能够根据负载的变化自适应地调整逻辑页的模式.实验结果表明,AFS方法能够在提高闪存数据更新性能的同时较好地兼顾数据读取性能.
According to the data access pattern in databases and the problems of existing flash data update approaches,a novel adaptive storage management,called AFS,is proposed for flash memory.In AFS,logic pages are classified into two modes:log mode and non-log mode,and different data update approaches are provided.Furthermore,AFS can dynamically adapt the mode of logic pages to the workload.The experimental results showed that AFS could significantly enhance flash data update performance,giving consideration to data read performance.