Well, even assuming that they're using top quality solid state storage, you're going from (at worst) hundreds of nanoseconds per retrieval to (at best) a hundred microseconds per (page) retrieval. Still very significant for some data access patterns.
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Interface stuttering due to swap is an issue on PC's due to hard drive latency, but would it be as much of an issue with solid state storage?
Well, even assuming that they're using top quality solid state storage, you're going from (at worst) hundreds of nanoseconds per retrieval to (at best) a hundred microseconds per (page) retrieval. Still very significant for some data access patterns.