| S.N. | Long-Term Scheduler | Short-Term Scheduler | Medium-Term Scheduler |
|---|---|---|---|
| It is a job scheduler | It is a CPU scheduler | It is a process swapping scheduler. | |
| Speed is lesser than short term scheduler | Speed is fastest among other two | Speed is in between both short and long term scheduler. | |
| It controls the degree of multiprogramming | It provides lesser control over degree of multiprogramming | It reduces the degree of multiprogramming. | |
| It is almost absent or minimal in time sharing system | It is also minimal in time sharing system | It is a part of Time sharing systems. | |
| It selects processes from pool and loads them into memory for execution | It selects those processes which are ready to execute | It can re-introduce the process into memory and execution can be continued. |