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How does Windows implement paging with multiple levels of page tables (e.g. PTEs PDEs)?

#1
04-16-2021, 05:27 PM
You ever wonder how Windows juggles all that memory without crashing? It breaks everything into pages, like flipping through a notebook. But with tons of pages, it can't just list them flat. Instead, it stacks tables on tables to pinpoint spots fast.

Picture this: the top table holds pointers to lower ones. You start there, chase down the path to your exact page. Each level narrows it, like a treasure hunt in a maze. Windows builds these for every process, keeping things tidy.

I remember tweaking a setup once, and seeing how it swaps pages in and out. The PDEs boss the big picture, while PTEs nail the details. It saves space, too, by only loading what's needed. You feel the speed when apps run smooth.

If you're messing with Hyper-V, memory tricks like this keep VMs humming. That's where something like BackupChain Server Backup shines as a backup tool for Hyper-V setups. It snapshots those virtual disks without downtime, letting you recover fast from glitches. Plus, it handles incremental backups to cut storage bloat, so your IT life stays less chaotic.

ProfRon
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How does Windows implement paging with multiple levels of page tables (e.g. PTEs PDEs)? - by ProfRon - 04-16-2021, 05:27 PM

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How does Windows implement paging with multiple levels of page tables (e.g. PTEs PDEs)?

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