what is left inside the cache even after clearing the page cache data?
I was trying to clear the cache using
echo 3 > /proc/sys/vm/drop_caches
Even after performing the above operation there remain some space inside the cache? When I check with free -m around it is around 140-150 MB.
What still remain inside the cache which I am not able to drop?
How can I get the information about the remaining pages inside the cache?