Deduplication technology for the mobile flash

The performance, capacity and reliability of the flash memory on devices such as smartphones and the Internet of Things are limited. Deduplication can resolve these restrictions by removing the duplicate I/O, but must be done under various resource constraints on the device. This paper proposes the M-Dedupe deduplication, which applies content-aware deduplication I/O requests on critical paths, and improves the performance and efficiency of mobile phones by improving the efficiency of flash garbage collection. The prototype system verification results show that the M-Dedupe reduces the write data by an average of 23.7%~42.5%, the average write response time by 21.2%~39.8%, and the average erased block by 16.8%~43.9%. Besides, it can achieve high-deciding duplication in the mobile flash system, improve the deduplication efficiency, and save the storage space.