What is the reason for Apt speed drop after Ubuntu update?

Question

ubuntu

After updating the distribution kit, the speed dropped from 2-8 mb/s to 200 kb/s. Mirror mirror.yandex.runot changed. More than 300 kb / s does not rise on any mirror. It was updated not automatically, but by itself, so it is unlikely that along with everyone else. Something similar happened, during and after the netboot installation of the system with mirror.yandex.ru, I did not find the reason, it went away on its own after I changed the mirror several times and returned to Yandex.

Answer 1

Problem solved , maybe it will help someone. It was relevant for all mirrors. The local machine is behind my home router. After much torment, I began to suspect my ISP of dirty deeds, and by doing

wget 'http://mirror.yandex.ru/ubuntu/dists/wily/main/binary-amd64/Packages.gz'

on a remote server, I saw that the speed to the mirror is very even nothing. I called the provider, they told me that the router was to blame. I connected the provider's cable directly - I got the speed at the rate. Downloaded the file. I connected back through the router - downloaded the same file at the same speed, and the new file - again slowly. As I understand it, as Vlad Zhivotnev guessed , they have a caching proxy there, but initially this was not the reason. The operator told me that the problem could be that the mirror server itself cuts the speed by responding to a gray IP, and that now they will assign me a white IP, saying that this is all they can do for me.

wget 'http://mirror.yandex.ru/ubuntu/dists/wily/Contents-amd64.gz';
wget 'http://archive.ubuntu.com/ubuntu/dists/wily/Contents-amd64.gz';

# Скорость отличная.

Answer 2

Try the same file 2 times via http download and see if the speed is higher the second time.