Title
Log-Structured Non-Volatile Main Memory
Abstract
Emerging non-volatile main memory (NVMM) unlocks the performance potential of applications by storing persistent data in the main memory. Such applications require a lightweight persistent transactional memory (PTM) system, instead of a heavyweight filesystem or database, to have fast access to data. In a PTM system, the memory usage, both capacity and bandwidth, plays a key role in dictating performance and efficiency. Existing memory management mechanisms for PTMs generate high memory fragmentation, high write traffic and a large number of persist barriers, since data is first written to a log and then to the main data store.In this paper, we present a log-structured NVMM system that not only maintains NVMM in a compact manner but also reduces the write traffic and the number of persist barriers needed for executing transactions. All data allocations and modifications are appended to the log which becomes the location of the data. Further, we address a unique challenge of log-structured memory management by designing a tree-based address translation mechanism where access granularities are flexible and different from allocation granularities. Our results show that the new system enjoys up to 89.9% higher transaction throughput and up to 82.8% lower write traffic than a traditional PTM system.
Year
Venue
Field
2017
2017 USENIX ANNUAL TECHNICAL CONFERENCE (USENIX ATC '17)
Visual short-term memory,Interleaved memory,Computer science,High memory,Parallel computing,Cache-only memory architecture,Computer network,Transactional memory,Memory management,Memory map,Data access
DocType
Citations 
PageRank 
Conference
3
0.40
References 
Authors
27
5
Name
Order
Citations
PageRank
Qingda Hu1223.78
Jinglei Ren21117.21
Anirudh Badam330717.97
Jiwu Shu470972.71
Thomas Moscibroda54047200.40