Hi,
from below output.How to read or relate one marked in bold.
[test]$ free -m
total used free shared buffers cached
Mem: 129176 92753 36423 0 2268 39973
-/+ buffers/cache: 50511 78664
Swap: 31996 0 31996
[test ~]$ top
top - 12:31:48 up 7 days, 1:26, 3 users, load average: 0.75, 1.12, 1.20
Tasks: 995 total, 1 running, 994 sleeping, 0 stopped, 0 zombie
Cpu(s): 3.3%us, 1.2%sy, 0.0%ni, 95.4%id, 0.0%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 132276504k total, 94983252k used, 37293252k free, 2322436k buffers
Swap: 32764556k total, 0k used, 32764556k free, 40933180k cached