Computerworld recently published an article concerning the performance of SSD drives over time. The long and short of it is that SSD’s do experience slower performance over time. The article is fairly long and they go in depth to uncover what causes the slowdown, but it’s definitely a recommended read for anyone considering an SSD at this point.
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Ted Ts’o has an interesting article on his blog detailing how to align filesystems to an SSD’s erase block size in linux, which is generally considered a very good thing to do. While Ted discusses how to go about doing this for most SSDs on the market, he also points out some of the problems with this method when using Intel’s next-generation series SSDs, in that the filesystem becomes terribly fragmented over time. However, he also explores several options to prevent this from occurring in the first place.
Also, be sure to check out his follow-up article exploring whether or not filesystems should be optimized for SSDs at all.