Have you heard about VM.swappiness kernel parameter? How do you set that parameter?

vm.swappiness is a tunable bit parameter that controls how much the part supports swap over RAM. At the source code level, it’s additionally characterized as the inclination to take mapped memory. As it were, the higher the vm.swappiness esteem, the more the framework will swap.This value can be set in a virtual as document/proc/sys/vm/swappiness.