TxCache: Transactional cache using byte-addressable non-volatile memories in SSDs

Youyou Lu, Jiwu Shu, Peng Zhu
2014 2014 IEEE Non-Volatile Memory Systems and Applications Symposium (NVMSA)  
Transaction is a common technique to ensure system consistency but incurs high overhead. Recent flash memory techniques enable efficient embedded transaction support inside solid state drives (SSDs). In this paper, we propose a new embedded transaction mechanism, TxCache, for SSDs with non-volatile disk cache. TxCache revises cache management of disk cache to support transactions using two techniques. First, it persists new-version data in non-volatile disk cache in a shadow way while
more » ... old-version data from being overwritten. Second, it uses pointers and flags leveraging the byte-addressability to cluster pages of each transaction and manage transaction status. The non-volatility and byte-addressability properties make TxCache an efficient transaction design. Experiments using file system and database workloads show performance improvement up to 46.0% and lifetime extension up to 33.8% compared to a recent transactional SSD design.
doi:10.1109/nvmsa.2014.6927193 dblp:conf/nvmsa/LuSZ14 fatcat:ghh5okkssvctre6ocmhvsc2abi