[root@apc01 ]# free -m
total used free shared buff/cache available
Mem: 2249 304 455 9 1490 1884
Swap: 2559 0 2559
●バッファ、キャッシュ削除
[root@apc01 ]# echo 3 >/proc/sys/vm/drop_caches
[root@apc01 ]# free -m
total used free shared buff/cache available
Mem: 2249 261 1869 9 118 1936
Swap: 2559 0 2559