What do you understand by the term arm-stickiness

Question

What do you understand by the term arm-stickiness?

Answer 1

When one or a few processes have a high access rate to data on one track of a storage disk, then they might monopolize the device through repeated requests to that track. This usually occurs with most ordinary device scheduling algorithms (or LIFO, SSTF, C-SCAN, etc). High-density multi-surface disks are more probable to be affected by this than low density ones.