I'm guessing you are referring to "swapping", though?
If it's just one user process, it'll be killed by the OOM killer¹. That application will just be gone: poof. And for the rest you'll probably not notice anything, not even a hiccup in your Bluetooth headphones.
If it's many services, or services that are excempt from that killer, your system might start swapping. Which, indeed, leads to the case you describe.
I'm guessing you are referring to "swapping", though?
If it's just one user process, it'll be killed by the OOM killer¹. That application will just be gone: poof. And for the rest you'll probably not notice anything, not even a hiccup in your Bluetooth headphones.
If it's many services, or services that are excempt from that killer, your system might start swapping. Which, indeed, leads to the case you describe.
¹https://unix.stackexchange.com/questions/153585/how-does-the...