I am trying to understand why ram usage is different for the same task.
cleos system newaccount --stake-net "0.0010 EOS" --stake-cpu "0.0010 EOS" --buy-ram-kbytes 3
It succeeded but the creator account ram usage went up by 0.3 KiB on the first account creation, the second time I tried to create another account with the same command and parameters, creator ram usage went up only by 0.1 KiB.
Why is it different? I thought I would be charged 3 KiB everytime, since I specified 3KiB? (I know standard is 8)