一键检测
curl https://raw.githubusercontent.com/uselibrary/memoryCheck/main/memoryCheck.sh | bash
或者
wget --no-check-certificate -O memoryCheck.sh https://raw.githubusercontent.com/uselibrary/memoryCheck/main/memoryCheck.sh && chmod +x memoryCheck.sh && bash memoryCheck.sh
阿里云一般是 balloon超售!
可用下面的命令关闭，重启系统后会重置回来
rmmod virtio_balloon