Ok, i have just installed ubuntu 13.10, and likes its cool, however, it also make me surprised that when I download files from Internet by using the
wget or firefox download, the cache usage grows quickly.
When the system starts up, the memory usage is about 900M, then, after downloading files, the usage is about 2.1G, and i must call
sync && echo 1 > /proc/sys/vm/drop_caches to release the caches.
i'm wondering whether there is any problems on ubuntu13.10? thx!