Things can be cached/buffered to increase efficiency. This will reduce the available memory. When needed the memory can be claimed back. You can clean the page cache manually with sync; echo 1 > /proc/sys/vm/drop_caches
Things can be cached/buffered to increase efficiency. This will reduce the available memory. When needed the memory can be claimed back. You can clean the page cache manually with sync; echo 1 > /proc/sys/vm/drop_caches