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Based on your experience, have you gained performance boost from parallelizing disk I/O? I/O reads in particular
In my case, I though having RAID 0 drives would allow to run at least two reads concurrently, but it still is slower than the serial approach.
Would you ever go for concurrent I/O reads? Why?
Basically when you have plenty of IO capacity and the process does not only do IO (i.e. it really spends time doing something).
Discs, per physical definition, are pretty serial in their processing.