Solution—Load Part and Keep Remainder on Disk
Load on Demand
The OS loader should be designed to load only the portions of the OS:
that are necessary to initiate application programs;
that are used very frequently and must always reside in memory in order to yield good performance.
The remainder of the OS should be kept on disk until it is required.
Likewise, the OS application program loader should be designed to load only enough of an application program into memory to get it started. Additional portions of the application program should only be read into memory upon demand.
Track Usage
After a portion of the OS or an application program has been loaded into memory, the OS should track how long it has been since the information was last used. ...
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