Slow download with good iperf test, what to do?

Question

PHP

Hi everyone, I've been scratching my head for a few days now.

There is a server. Debian, nginx, pure-ftpd, php-fpm.
When uploading a file, it gives a ridiculous speed of less than a megabit. And what about FTP, SFTP, via HTTP-POST.
We started to deal with hoting, ran iperf, the speed was 150 Mbps per channel (in multithreading 300-400), and on different ports, in normal and reverse mode.
We ran wget from different sites, the speed is also normal.
But here FTP, SFTP, HTTP-POST, all my friends, in different parts of Europe, have the same problem no more than 2 megabits.
The speed to the data center on their speedtest is 350Mbps.

I appeal to the collective mind, if the hoster cuts, then how to catch his hand? If the server is not configured correctly, which way to look?

Answer 1

WELL JUST ask the hoster