# swap when less than N % mem is available
vm.swappiness = 10

# cache inodes (50 = don't shrink inode cache)
vm.vfs_cache_pressure = 50

# % memory available for all processes -- some suggest 50
vm.overcommit_ratio = 100

# 0 = fuzzy available memory guessing : bad
# 1 = high performance, high risk : bad
# 2 = don't use more memory than swap + overcommit_ratio % : good
vm.overcommit_memory = 2