Abstract
This letter analyzes the characteristics of write operations in file systems for PCM (phase-change memory), and observes that a large proportion of writes only involve a small modification of the previous version. This observation motivates a new file system for PCM called P2FS, which reduces write traffic to PCM by exploiting the similarity of data between versions, while preserving the same reliability level of existing copy-on-write file systems. Experimental results show that P2FS reduces file I/O time by 48%, and energy consumption by 65%, on average, compared to copy-on-write.
Original language | English |
---|---|
Article number | 20140520 |
Journal | IEICE Electronics Express |
Volume | 11 |
Issue number | 13 |
DOIs | |
State | Published - 19 Jun 2014 |
Keywords
- File system
- Non-volatile memory
- Phase-change memory