2023/05/03 by Rémi Dulong, Quentin Acher, Dulong, Rémi +9
Computer Science · #68M15 #Advanced Data Storage Technologies #Caching and Content Delivery #FOS: Computer and information sciences #Hardware Architecture (cs.AR) #Operating Systems (cs.OS) #Parallel Computing and Optimization Techniques
paper · pdf · doi:10.48550/arxiv.2305.02244
openalex publication_date 2023/05/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Modern NVMM is closing the gap between DRAM and persistent storage, both in terms of performance and features. Having both byte addressability and persistence on the same device gives NVMM an unprecedented set of features, leading to the following question: How should we design an NVMM-based caching system to fully exploit its potential? We build two caching mechanisms, NVPages and NVLog, based on two radically different design approaches. NVPages stores memory pages in NVMM, similar to the Linux page cache (LPC). NVLog uses NVMM to store a log of pending write operations to be submitted to the LPC, while it ensures reads with a small DRAM cache. Our study shows and quantifies advantages and flaws for both designs.