CompoundFS: Compounding I/O Operations in Firmware File Systems

on YouTube ↗16m

" summary

Claims a firmware-level file system, CompoundFS, that combines consecutive I/O into single commands and offloads simple data processing to device CPUs, implemented by extending PMFS into a pmfs-based prototype with a shared command buffer. Shows up to 2.1x (256B/4KB RMW) and 1.75x (LevelDB random write) speedups, and reports the larger paper numbers 178% and 75% gains. Implements read-modify-write compound and write+checksum offload; consistency is currently all-or-nothing.

AI-written summary · about

" chapters (8)

1. 0:00Start
2. 1:32Software Latency
3. 2:45Limitations of Current Solutions
4. 4:51Takeaways
5. 8:07High-Level Architecture of Compound Fs
6. 9:40Regular Read Operation
7. 10:28Design a Crash Consistency Model for Compute Compound Oil Operations
8. 11:27Evaluation Goal