When multiple processes issue I/O requests to a disk, the OS must decide what order to serve them in. On an HDD, the order matters enormously — a bad ordering means the disk arm ping-pongs across the ...

Disk scheduling algorithms manage how data is read from and written to a computer's hard disk. These algorithms help determine the order in which disk read and write requests are processed.

Processor speed and memory size are increasing day-by-day several times faster than disk speed. The difference between these two identifies that disk I/O performance could become a very important ...