How does the system use in-memory paging to reduce disk I O when the system is under heavy memory load?

[ProfRon]

You ever notice your computer grinding to a halt when too many tabs are open?
It happens because RAM fills up fast under heavy load.
The system starts swapping out data to make room.
Normally, that swap goes straight to the disk, causing tons of I/O drag.
But in-memory paging changes the game.
It squeezes that data into a compressed pocket right inside RAM.
I love how it keeps things zipping along without hitting the disk every time.
You get fewer slowdowns that way.
Think about it-your apps stay snappier even when memory's stretched thin.
I've tinkered with setups like this, and it really cuts the lag.
The system just borrows space in RAM, packs it tight, and pulls it back quick.
No more constant disk thrashing to bog you down.
It feels like giving your machine a secret boost.

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