massive network traffic

[swat69]

I want to setup a new electrum-server with a fresh Debian 9
and I get up to 100 Megabyte/sec network traffic instantly with only about 100 clients connected.
(We had a few DM in discord in the past regarding this issue)
I can reproduce it with Ubuntu 16 !!

This is ifstat with 100 clients connected:
root@e4:/home/verge# ifstat
eth0
KB/s in KB/s out
1049.72 88401.77
1055.05 86256.49
1074.94 89017.52
1061.73 89256.17
1096.89 90347.79
1058.83 89652.58
1132.14 91059.95

My existing electrum server are running with Debian 8 with traffic in a normal range.

[justinvforvendetta]

this isnt because of the blockchain_headers file being downloaded by clients?

[swat69]

Even If I reset my electrum client with 0 transactions and the blockchain_headers is up-to-date the electrum client generates traffic of 700-900 KBytes/sec, and it never stops.
Maybe this traffic is caused by the "blockchain_headers not being updated issue", but why only on specific server OS.
I tested win10 and ubuntu (VM) as client OS at that time, maybe give it a try: 195.201.120.214 : 50001.

[swat69]

I tested also:
Fedora release 27 (Twenty Seven)
same insane network traffic:
130 clients, 80 MegaByte/sec

So I'm unable to run a new Electrum-Server with Debian 9, Ubuntu 16, Fedora rel 27.