Ubuntu uses a swap file by default since 17.04 Zesty: https://blog.surgut.co.uk/2016/12/swapfiles-by-default-in-ubuntu.html https://blog.surgut.co.uk/2016/12/sw

Ubuntu uses a swap file by default since 17.04 Zesty: https://blog.surgut.co.uk/2016/12/swapfiles-by-default-in-ubuntu.html https://blog.surgut.co.uk/2016/12/swapfiles-by-default-in-ub... But as otherwise discussed this only made it into a release candidate and not an actual release. So the impact is minimal.