vm.swappiness = 1 vm.vfs_cache_pressure = 800 vm.dirty_ratio = 5 vm.dirty_background_ratio = 2 vm.min_free_kbytes = 65536 # Reserve 64MB for emergencies This is mainly useful for smaller systems/VMs/dev test/Raspberry Pi etc.. but even servers with huge amounts of RAM can start putting a ton of things into buffers and cache especially if you open large files constantly.........