On Thu, Mar 19, 2015, at 19:35, Root, Paul T wrote:
I have a script that frees up those buffers that make memory look full
sync
echo 3 >/proc/sys/vm/drop_caches
free -mt
Why would you do that? It is strongly recommended to not do that:
Use of this file can cause performance problems. Since it discards cached
objects, it may cost a significant amount of I/O and CPU to recreate the
dropped objects, especially if they were under heavy use. Because of this,
use outside of a testing or debugging environment is not recommended.
Page cache is not memory that is unavailable to other applications. If a
program requests more memory and there is not enough free, it will take
the page cache.