LOOK || Disk Scheduling Algorithm in Operating System

LOOK is the advanced version of SCAN (elevator) disk scheduling algorithm

gives slightly better seek time than any other algorithm in the hierarchy FCFS-SRTF-SCAN-C-SCAN-LOOK

The LOOK algorithm services request similarly as SCAN algorithm meanwhile it also “looks” ahead as if there are more tracks that are needed to be serviced in the same direction.

If there are no pending requests in the moving direction the head reverses the direction and start servicing requests in the opposite direction.

Видео LOOK || Disk Scheduling Algorithm in Operating System канала Priyanka Saxena