3.swap space increased

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Entering the following commands in sequence can increase the swap space by 3G and solve some program errors that run out of memory.
sudo fallocate -l 3G /var/swapfile
sudo chmod 600 /var/swapfile
sudo mkswap /var/swapfile
sudo swapon /var/swapfile
sudo bash -c 'echo "/var/swapfile swap swap defaults 0 0" >> /etc/fstab'

• 1.Add swapfile file size customization

  sudo fallocate -l 3G /var/swapfile

• 2.Configure permissions for this file

  sudo chmod 600 /var/swapfile

• 3.Establish exchange partition

  sudo mkswap /var/swapfile

• 4.Enable swap partitioning

  sudo swapon /var/swapfile

• Set to automatically enable swapfile

sudo bash -c 'echo "/var/swapfile swap swap defaults 0 0" >> /etc/fstab'

Set to automatically enable swapfile

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jtop

Swap has become 6g.