I'm monitoring my RAM on a CentOS 6 server and when I free -h
I see 15G available which is OK but when I free -b
I see 1641154969 bytes which equals 1,641154969G.
free -h
total used free shared buffers cached
Mem: 15G 3.0G 12G 1.7M 39M 671M
-/+ buffers/cache: 2.3G 12G
Swap: 7.7G 0B 7.7G
free -b
total used free shared buffers cached
Mem: 1641154969 3238035456 1317351424 1781760 41451520 704331776
-/+ buffers/cache: 2492252160 1391929753
Swap: 8279552000 0 8279552000