Một số mirror cho Ubuntu Port, bản Ubuntu trên Raspberry Pi
http://ftp.tu-chemnitz.de/pub/linux/ubuntu-ports
http://ports.ubuntu.com/ubuntu-ports
https://mirror.kumi.systems/ubuntu-ports
https://mirrors.aliyun.com/ubuntu-ports/
http://mirrors.mit.edu/ubuntu-ports/
https://ftp.ubuntu-tw.org/mirror/ubuntu-ports/
https://mirror.yandex.ru/ubuntu-ports/
https://mirror.scaleuptech.com/ubuntu-ports/
https://mirrors.ustc.edu.cn/ubuntu-ports/
https://mirror.csclub.uwaterloo.ca/ubuntu-ports/
https://files.openstack.org/mirror/ubuntu-ports/
https://mirror.0x.sg/ubuntu-ports/
https://archive.eqx-media.nl/ubuntu-ports/
http://mirror.hk-net.de/ubuntu-ports/
https://mirror.ossplanet.net/ubuntu-ports/
http://mirror.liquidtelecom.com/ubuntu/ubuntu-ports/
https://mirrors.sustech.edu.cn/ubuntu-ports/
https://ftp.fau.de/ubuntu-ports/
https://ftp.uni-erlangen.de/ubuntu-ports/
https://ftp.lanet.kr/ubuntu-ports/
https://ftp.harukasan.org/ubuntu-ports/
https://mirror.aarnet.edu.au/pub/ubuntu/ports/
https://mirror.misakamikoto.network/ubuntu-ports/
http://mirror.anigil.com/ubuntu-ports
curl -s https://gist.githubusercontent.com/swetoast/32d382fc714f1bda0850bfe09d0cb09e/raw/f946fdee8b2d88792d9410b1b69eace15bb9e55c/gistfile1.txt | xargs -n1 -I {} sh -c 'echo `curl -r 0-102400 -s -w %{speed_download} -o /dev/null {}/ls-lR.gz` {}' |sort -g -r |head -1| awk '{ print $2 }'
Lệnh trên sẽ show ra cho bạn biết tốc độ download từ máy của bạn đến repository nào gần nhất.
Sau vài lần thử thì mình thấy repo này có tốc độ khá ngon khi tải từ Việt Nam https://mirrors.ustc.edu.cn/ubuntu-ports