2022/04/07 by Derrick Greenspan, Greenspan, Derrick, Naveed Ul Mustafa +7
Computer Science · #Advanced Data Storage Technologies #Distributed systems and fault tolerance #FOS: Computer and information sciences #Operating Systems (cs.OS) #Parallel Computing and Optimization Techniques
paper · pdf · doi:10.48550/arxiv.2204.03289
openalex publication_date 2022/04/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
DIMM-compatible persistent memory unites memory and storage. Prior works utilize persistent memory either by combining the filesystem with direct access on memory mapped files or by managing it as a collection of objects while abolishing the POSIX abstraction. In contrast, we propose retaining the POSIX abstraction and extending it to provide support for persistent memory, using Persistent Memory Objects (PMOs). In this work, we design and implement PMOs, a crash-consistent abstraction for managing persistent memory. We introduce psync, a single system call, that a programmer can use to specify crash consistency points in their code, without needing to orchestrate durability explicitly. When rendering data crash consistent, our design incurs a overhead of ≈ 25% and ≈ 21% for parallel workloads and FileBench, respectively, compared to a system without crash consistency. Compared to NOVA-Fortis, our design provides a speedup of ≈ 1.67× and ≈ 3× for the two set of benchmarks, respectively.