Operating system disk scheduling


#1


#2

@Gate_Aspirant1 Its given “Single sequential user process” that means all requests to disk scheduler will be in sequence, and will be fed to the scheduler one by one. Once a scheduler receives a request, it will block the execution of the subsequent request after the current one, hence there is no use of a scheduling algorithm as the input sequence to the disk scheduler will be the same for all algorithms. Thus for an OS capable of loading and executing “single sequential user process”, the improvement in execution of I/O programs of using SSTF over FCFS would be 0%, that is no improvement. the answer is d) 0%