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you don't need more 4GB of RAM (lemmy.dbzer0.com)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 11 points 6 months ago

"Free" memory is actually usually used for cache. So instead of waiting to get data from the disk, the system can just read it directly from RAM after the first access. The more RAM you have, the more free space you'll have to use for cache. My machine often has over 20GB of RAM used as cache. You can see this with free -m. IIRC both Gnome and KDE's system managers also show that now.