Abstract
A selective garbage collection is presented for hybrid mapping flash translation layer in NAND based block devices. It analyzes the cost and the benefit of the two page reclaiming methods: repeated block merge and moving valid pages. Based on the cost-benefit analysis, more beneficial way is selected at each garbage collection. A trace-driven simulation shows that the presented scheme improves the average performance up to 6.6 %.
| Original language | English |
|---|---|
| Pages (from-to) | 6427-6432 |
| Number of pages | 6 |
| Journal | Information (Japan) |
| Volume | 17 |
| Issue number | 12B |
| State | Published - 1 Dec 2014 |
Keywords
- Cost-benefit analysis
- Flash translation layer
- Garbage collection
- Hybrid mapping
- Nand flash memory