How does Windows use memory reservation techniques for large processes?

[ProfRon]

Windows grabs chunks of memory space for big apps right up front. You know, it sets aside room without actually using the RAM yet. That way, when your huge program kicks off, it won't crash from running out of spots. I remember fixing a game that hogged everything; Windows just reserved the zone ahead. It uses tricks like placeholders to hold the address range. Your process thinks it owns a massive block, but only pulls in real memory as it goes. Pretty slick, right? It avoids the mess of hunting for space later. For those monster files or databases, this keeps things smooth. I once watched a video editor balloon up; without reservation, it'd stutter bad. Windows peeks at the app's needs and blocks off the turf early. You get fewer blue screens that way. It juggles multiple large ones by spreading reservations thin. No overcrowding in the memory neighborhood.

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