创建4GB Swap文件
sudo dd if=/dev/zero of=/swapfile bs=1M count=4096
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
设置开机自动挂载
echo "/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
验证
free -h
sudo swapon --show
sudo dd if=/dev/zero of=/swapfile bs=1M count=4096
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo "/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
free -h
sudo swapon --show