It's fine until you run out of disk space
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I've actually done something similar with a 2GB ram machine... 2GB ram / 8GB zswap, actually ran way faster lol
Yeah it works surprisingly well. I installed Gentoo on a 2005 era laptop a few years ago and had to keep adding zswap until Rust could compile for Firefox. Iirc it took about 12G of zswap to get it working, but it wasn’t too bad overall.
I actually ended up doing something like this on my main desktop lol, 16GB ram/ 32GB swap... I hate closing programs