Operating systems have supported readahead for a long time. It's even more benefit for spinning rust than SSDs because the benefit of a correct prediction is la

Operating systems have supported readahead for a long time. It's even more benefit for spinning rust than SSDs because the benefit of a correct prediction is larger when the drive is slower. But it's also a trade off, because if you predict wrong you're wasting scarce I/O resources fetching useless data.