This paper talks about utilizing black-box modelling approach to analyze and evaluate SSD performance using various inputs, such as read size, write ratio, read stride, etc and measure the throughput and latency. These experiments are done on 2 different SSDs and 1 HDD and their performance is compared at.
The paper is very detailed since it has a lot of graphs and results that it is presenting to us with various parameters that it's looking at. However, it will be nicer if they could look it from higher-level perspective since instead of just feeding in random reads & writes, look at how it interacts with the current file system implementation, etc.
Things that need to be researched in this area is that how to reduce the cost of SSD because with the current rate, it's hard to deploy it commercially. We also need to consider OS support for SSD since it's fundamentally different from HDD (faster than HDD read, sometimes slower than HDD writes). Improving the Flash Translation Layer needs to be looked at too since we've seen in the paper that having a bad FTL can cause quite a significant performance differnece between SSDs.
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