Let's pessimistically assume you have to read all information associated with each file from disk. I suspect this sort of query is IO bound since processing is

Let's pessimistically assume you have to read all information associated with each file from disk. I suspect this sort of query is IO bound since processing is minimal and assuming we can mostly avoid fragmentation on disk we could feasibly read data at 100MB/s with a consumer level magnetic drive. The article says the data set is 300GB so we could feasibly get this done in an hour.