How does the Linux system increase the swap partition space small?

Standard Linux system How to increase the swap partition space small? Quasi-linux installation, swap partition is twice times the size of memory, if the addition of memory, the swap partition will also increase. If you increase the 1G memory, the swap partition will increase 2G, but how to increase the specific? Let's take a look at

1, view the size of the swap command: "Free-m"

2, select the appropriate partition, create the appropriate swap file, the command is: "DD If=/dev/zero of=/swap1 bs=1m count=2048"

3. Set the generated file to swap file, command: "Mkswap/swap1"

4, activate the newly created swap partition, command: "Swapon/swap1"

5, view the effective swap partition size, command: "Free-m"

6. Set boot up new swap partition, edit "/etc/fstab" profile, add "/swap1 swap defaults 0 0" at end of file

7, restart the computer to see if the swap partition is effective.

Note: Make sure that the "/etc/rc.local" does not have the command to cancel the buffer ("swapoff-a"), please comment out.