KDE Will Nicely Notify You When Apps Are Being Killed Due To Out-Of-Memory
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But if you're filling up all RAM and swap, either you needed to upgrade a while ago, or you're doing something wrong.
Or you opened pycharm (ಥ﹏ಥ) 5 gigs of RAM is fairly audacious for a single program :/
Not necessarily. When Ubuntu 22.04 had an issue where systemd-oomd was killing apps that touched the swap, something like this notification would have cleared up a lot of confusion from end users, myself included.
Or your OS* is doing something wrong 😆
OS stands for "Oh Shit!"