Editing Elevator algorithm (section)

== Analysis ==
For both versions of the elevator algorithm, the arm movement is less than twice the number of total cylinders and produces a smaller variance in response time. The algorithm is also relatively simple. 

The elevator algorithm is not always better than [[shortest seek first]], which is slightly closer to optimal, but can result in high variance in response time and even in [[Resource starvation|starvation]] when new requests continually get serviced prior to existing requests. Anti-starvation techniques can be applied to the shortest seek time first algorithm to guarantee a maximum response time.