Where the time actually goes
Reading a block from a spinning disk involves moving the arm to the right track, waiting for the sector to come round, and transferring the data.
For a workload of scattered single-block reads, which dominates?
Reading a block from a spinning disk involves moving the arm to the right track, waiting for the sector to come round, and transferring the data.
For a workload of scattered single-block reads, which dominates?