raspbian change swap file size

edit "/etc/dphys-swapfile"

   CONF_SWAPSIZE=2048   #swap file size (MB)

   CONF_MAXSWAP=4096  # max swap file size

exec "sudo service dphys-swapfile restart"

exec "free" to verify.

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使用zram

"sudo apt install zram-tools"

edit "/etc/default/zramswap"

  PERCENTAGE=50

exec "sudo service zramswap restart"

exec "free" to verify

exec "swapon" to check