Computer Science – Performance
Scientific paper
2011-10-19
Computer Science
Performance
5 pages, 5 figures, accepted by ICNC 2012
Scientific paper
Agarwal et al. gave an closed-form expression for write amplification in NAND flash memory by finding the probability of a page being valid over the whole flash memory. This paper gives an improved analytic expression for write amplification in NAND flash memory by finding the probability of a page being invalid over the block selected for garbage collection. The improved expression uses Lambert W function. Through asymptotic analysis, write amplification is shown to depend on overprovisioning factor only, consistent with the previous work. Comparison with numerical simulations shows that the improved expression achieves a more accurate prediction of write amplification. For example, when the overprovisioning factor is 0.3, the expression proposed by this paper gives a write amplification of 2.36 whereas that of the previous work gives 2.17, when the actual value is 2.35.
Kurkoski Brian
Xiang Luojie
No associations
LandOfFree
An Improved Analytical Expression for Write Amplification in NAND Flash does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An Improved Analytical Expression for Write Amplification in NAND Flash, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Improved Analytical Expression for Write Amplification in NAND Flash will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-597344