NOVA: The Fastest File System for NVDIMMs

We present NOVA, a free, open-source, Linux file system designed to maximize performance on NVDIMM-based storage systems while providing strong consistency guarantees. Experimental results show that, on write-intensive workloads, NOVA provides a 2.5x times greater throughput and 4.5x lower latency than EXT4-DAX and is as fast or faster than any other currently available NVDIMM file system. NOVA also provides strong data and metadata integrity guarantees in the face of NVDIMM media and system failures. The talk will describe NOVA’s design, features, and performance characteristics.