Shortest Job Next (SJN) is a scheduling algorithm that selects the process with the shortest expected execution time to run next, optimizing for minimal average waiting time. It is non-preemptive, meaning once a process starts executing, it runs to completion without interruption, which can lead to the 'convoy effect' if longer processes are delayed indefinitely.

Shortest Job Next

A scheduling algorithm is a method used by operating systems to allocate CPU time to various processes, ensuring efficient execution and resource utilization. It balances factors like fairness, throughput, and response time to optimize system performance and user experience.

scheduling algorithm

shortest expected execution time

minimal average waiting time

non-preemptive

process starts executing

runs to completion

The Convoy Effect refers to the phenomenon where a group of vehicles or individuals move together, impacting their speed and behavior due to mutual influence and shared conditions. This effect is significant in traffic flow analysis, logistics, and social dynamics, as it highlights the importance of coordination and the potential for bottlenecks or inefficiencies when entities move in unison.

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