TY - Jour A2 - Fokkink，Wan Au - Zhang，Wenzhe Au - Lu，Kai Au - Luján，Mikel Au - Wang，Xiaoping Au - Zhou，Xu Py - 2015 DA - 2015/12/27 Ti - 写入逻辑：An Optimized Logging for Consistency in NVRAM SP - 398369 VL - 2015 AB - Nonvolatile memory (e.g., Phase Change Memory) blurs the boundary between memory and storage and it could greatly facilitate the construction of in-memory durable data structures. Data structures can be processed and stored directly in NVRAM. To maintain the consistency of persistent data, logging is a widely adopted mechanism. However, logging introduces write-twice overhead. This paper introduces an optimized write-combined logging to reduce the writes to NVRAM log. By leveraging the fast-read and byte-addressable features of NVRAM, we can perform a read-and-compare operation before writes and thus issue writes in a finer-grained way. We tested our system on the benchmark suit STAMP which contains real-world applications. Experiment results show that our system can reduce the writes to NVRAM by 33%–34%, which can help extend the lifetime of NVRAM and improve performance. Averagely our system can improve performance by 7%–11%. SN - 1058-9244 UR - https://doi.org/10.1155/2015/398369 DO - 10.1155/2015/398369 JF - Scientific Programming PB - Hindawi Publishing Corporation KW - ER -