How does mmap work? I mean, what problem can lead to its failure

Question

I am working on programs on Linux that need a mmap file from a hard drive, but I have a question that might make it fail. as if all the memories were fragmentary, with only 200 M each, but I want the mmap file to be 1000M in memory, will it be successful? and one more question: are there any tools in Linux for storing memory, like some tools in Windows, for example. built-in tool for xp.

thank,

Answer 1

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Answer 2

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Answer 3

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