 
  
   
  
  # 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