How the Linux Kernel Manages Virtual Memory

“In addition to swapping, virtual memory is used to manage all
pages of memory, which are required for file caching, process
isolation, and even network communication. Anything that queues
data, you can be assured, traverses the virtual memory system.
Depending on a server’s role, virtual memory functionality may not
be optimal. An administrator can dramatically improve overall
system performance by adjusting certain virtual memory manager
settings.

“To optimally configure your Virtual Memory Manager (VMM), it’s
necessary to understand how it does its job. We’re using Linux for
example’s sake, but the concepts apply across the board, though
some slight architectural differences will exist between the
Unixes.”

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