In general
- SWAP should be approx the same as RAM
- vm.swappiness could be 10 if you have a lot of RAM, but likely higher if you have less RAM
You need to worry about RAM if you get Out of memory errors:
journalctl -k | grep -i 'Out of memory'
Related links
- https://www.linuxatemyram.com/
- https://www.virtualmin.com/docs/system-optimization/low-memory/#debugging-memory-usage