In performance perspective mode, Linux box is designed to keep the frequently used application's data in memory to boost up system performance. System with low RAM space will affected by opposite manner that the cache occupies RAM space mostly and system got slow even got hanged also. Apart from theory, we need to resolve that to run the machine without hang.
To free such cache from RAM, run the below command often. This will erase the cache with simple value what we give.
To free such cache from RAM, run the below command often. This will erase the cache with simple value what we give.
$ echo 3 > /proc/sys/vm/drop_caches
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