In what sense do those who claim to have a "memory void" do so? Why does it happen, and how does the OS handle it if it occurs?

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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In what sense do those who claim to have a "memory void" do so? Why does it happen, and how does the OS handle it if it occurs?

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Step 1

Introduction:

To allocate contiguous memory, split all accessible memory into equal-sized divisions and give each process its portion.

This is no longer practicable since it limits the number of concurrent processes and approach size.

Keep track of unused (free) memory blocks (holes) and discover an appropriate place whenever a process has to be loaded into memory.

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