Swapping concept occur in process scheduling and usually used by medium term scheduler. The term medium term scheduler removes process from CPU for duration and reduces the degree of multiprogramming. When execution of process occurs it is first loaded from secondary storage devices such as hard disk to main memory such as RAM and this is called process loading. Besides the process has to be loaded back into the secondary memory after complete its execution because memory is limited and processes needs it for their use an operating system swaps the two processes and this is called swapping. In a single word “swapping is removing of process from memory to secondary memory and again back to main memory”.
In the above figure swapping (more…)
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