how to free memory linux code example
Example 1: linux memory cache clear
# clear pagecache only.
sync; echo 1 > /proc/sys/vm/drop_caches
# clear dentries and inodes.
sync; echo 2 > /proc/sys/vm/drop_caches
# clear pagecache, dentries and inodes.
sync; echo 3 > /proc/sys/vm/drop_caches
Example 2: linux how to free memory
echo 2 > /proc/sys/vm/drop_caches