An active space recycling mechanism for flash storage systems in real-time application environment

Sheng Jie Syu, Jing Chen

研究成果: Conference contribution

11 引文 斯高帕斯(Scopus)

摘要

Most of the flash storage systems reclaim the space occupied by invalid data only when the available free space is low and a data writing request is being processed thereby may intermittently increase the time of carrying out a writing operation and decrease the system performance. For real-time applications, such passive space recycling not only results in tasks suffering long blocking time but also imposes great impact on the predictability of their timing behaviors. This paper presents an active mechanism to recycle invalidated space in flash storage system which, by periodically launching tasks to reclaim data space containing invalid data, can reduce the blocking incurred from space recycling as well as provide a more analysable recycling operation. The active space recycling mechanism can work well with the wear-leveling mechanism commonly required in flash storage management. In addition, the implementation requires no changes of its host file system. Simulation results show that the proposed space recycling mechanism has significant improvement on the worst case timing behaviors of write operations.

原文English
主出版物標題Proceedings - 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications
頁面53-62
頁數10
DOIs
出版狀態Published - 2005 十二月 1
事件11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications - Hong Kong, China
持續時間: 2005 八月 172005 八月 19

出版系列

名字Proceedings - 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications

Other

Other11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications
國家/地區China
城市Hong Kong
期間05-08-1705-08-19

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

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