How to free RAM Memory

STEP1:

    i) sudo sync

  ii)sudo sysctl -w vm.drop_caches=3

  iii) sudo sync




STEP2:


  i) echo 1 > /proc/sys/vm/drop_caches

  ii) echo 2 > /proc/sys/vm/drop_caches

  iii) echo 3 > /proc/sys/vm/drop_caches