# free
total used free shared buffers cached
Mem: 163840 88360 75480 0 32152 32392
-/+ buffers/cache: 23816 140024
Swap: 249852 1728 248124
# nano /etc/sysctl.conf
root@Taranto:~# free
total used free shared buffers cached
Mem: 163840 88960 74880 0 32188 32948
-/+ buffers/cache: 23824 140016
Swap: 249852 1728 248124
# sysctl -p
net.ipv4.ip_forward = 1
vm.vfs_cache_pressure = 1000
# free
total used free shared buffers cached
Mem: 163840 88992 74848 0 32192 32960
-/+ buffers/cache: 23840 140000
Swap: 249852 1728 248124