Wednesday, November 2, 2016
How to clear cache on CentOS
clear page cache
sudo echo 1 > /proc/sys/vm/drop_caches
or
sudo sysctl -w vm.drop_caches=1
clear directory entry and inode
sudo echo 2 > /proc/sys/vm/drop_caches
or
sudo sysctl -w vm.drop_caches=2
clear page cache and directory entry and inode
sudo echo 3 > /proc/sys/vm/drop_caches
or
sudo sysctl -w vm.drop_caches=3
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