Drop cache Linux

By • On • In Unix/Linux

Gb

#free -g
             total       used       free     shared    buffers     cached
Mem:             3          3          0          0          0          3
-/+ buffers/cache:          0          3
Swap:           16          0         16

Mb

#free -m
             total       used       free     shared    buffers     cached
Mem:          4047       3996         51          0        254       3099
-/+ buffers/cache:        642       3405
Swap:        16386          0      16386

Drop

echo 3 > /proc/sys/vm/drop_caches