Nokia-N900:~# free total used free shared buffers Mem: 235252 231864 3388 0 16144 -/+ buffers: 215720 19532 Swap: 999952 57460 942492 Nokia-N900:~# echo 3 >/proc/sys/vm/drop_caches Nokia-N900:~# free total used free shared buffers Mem: 235252 202284 32968 0 68 -/+ buffers: 202216 33036 Swap: 999952 59112 940840 Nokia-N900:~#