Wenfei Wu

Enterprise SSDs integrate substantial computing resources (e.g., ARM processor and onboard DRAM) to handle I/O bursts. However, these resources significantly raise SSD monetary cost and suffer severely underutilized in JBOF deployments due to the sporadic nature of I/O bursts. In this paper, we p...

Our production experience in large-scale data-processing pipelines shows that, despite its attractive programming model, memory-mapped I/O (_mmap-IO_) on distributed file systems (DFS) exhibits severe operational pathologies—livelocks during write-heavy phases, chronically low multi-threaded thro...