Emergence of new hardware,including persistent memory and smart network interface card(SmartNIC),has brought new opportunities to file system design.In this paper,we design and implement a new file system named NICFS ...Emergence of new hardware,including persistent memory and smart network interface card(SmartNIC),has brought new opportunities to file system design.In this paper,we design and implement a new file system named NICFS based on persistent memory and SmartNIC.We divide the file system into two parts:the front end and the back end.In the front end,data writes are appended to the persistent memory in a log-structured way,leveraging the fast persistence advantage of persistent memory.In the back end,the data in logs are fetched,processed,and patched to files in the background,leveraging the processing capacity of SmartNIC.Evaluation results show that NICFS outperforms Ext4 by about 21%/10%and about 19%/50%on large and small reads/writes,respectively.展开更多
针对无人机飞行试验的需要,设计了一种基于TMS320F2812和SD卡(secure digital memory card)的飞行试验数据记录装置。从软硬件角度详细阐述了系统工作的原理,给出关键电路的实现方法及系统软件设计流程。实际测试表明该设备具有接口灵...针对无人机飞行试验的需要,设计了一种基于TMS320F2812和SD卡(secure digital memory card)的飞行试验数据记录装置。从软硬件角度详细阐述了系统工作的原理,给出关键电路的实现方法及系统软件设计流程。实际测试表明该设备具有接口灵活、便于升级、存储容量大、可靠性高、体积小、重量轻、成本低、数据管理方便等特点,为无人机定型提供了重要的技术支持。展开更多
基金Project supported by the National Key R&D Program of China(No.2021YFB0300500)the National Natural Science Foundation of China(No.62022051)。
文摘Emergence of new hardware,including persistent memory and smart network interface card(SmartNIC),has brought new opportunities to file system design.In this paper,we design and implement a new file system named NICFS based on persistent memory and SmartNIC.We divide the file system into two parts:the front end and the back end.In the front end,data writes are appended to the persistent memory in a log-structured way,leveraging the fast persistence advantage of persistent memory.In the back end,the data in logs are fetched,processed,and patched to files in the background,leveraging the processing capacity of SmartNIC.Evaluation results show that NICFS outperforms Ext4 by about 21%/10%and about 19%/50%on large and small reads/writes,respectively.
文摘针对无人机飞行试验的需要,设计了一种基于TMS320F2812和SD卡(secure digital memory card)的飞行试验数据记录装置。从软硬件角度详细阐述了系统工作的原理,给出关键电路的实现方法及系统软件设计流程。实际测试表明该设备具有接口灵活、便于升级、存储容量大、可靠性高、体积小、重量轻、成本低、数据管理方便等特点,为无人机定型提供了重要的技术支持。
