Please help me diagnose throughput issue

DrJohnZoidberg

DrJohnZoidberg

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Hey all,

I'm running a dedicated server in Germany and it's been running beautifully until now. The issue though doesn't seem to be with the server but rather the ISP networks here.

Until a few days ago I was able to download at 10Mbps - 20Mbps off the server from my VDSL line then suddenly the other night it just gets stuck at 2Mbps and sometimes peaks at around 4Mbps.

I've tried 3 different ISP accounts all show the same issue.

To diagnose I've put a Linux ISO on the server and started testing with wget from different locations.

If you have the bandwidth to spare and a few minutes could you please just test what speed you get with this download and let me know what link and speed it's from. Please don't use a download manager, I'm trying to diagnose single thread download speed. Also you don't need to download the entire file, just enough to see a stable download speed.

Link: http://hetzner-de-12.ddns.net/files/ubuntu-14.04-desktop-i386.iso

Test from a VPS in Germany (I suspect these link speeds are limited):

Code: 
--2015-03-06 15:43:46--  http://hetzner-de-12.ddns.net/files/ubuntu-14.04-desktop-i386.iso
Resolving hetzner-de-12.ddns.net (hetzner-de-12.ddns.net)... 78.46.106.110
Connecting to hetzner-de-12.ddns.net (hetzner-de-12.ddns.net)|78.46.106.110|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1017118720 (970M) [application/octet-stream]
Saving to: `ubuntu-14.04-desktop-i386.iso.1'

 9% [===>                                                ] 95,452,560  [B]5.77M/s[/B]  eta 2m 44s
Between 40Mbps and 60Mbps.

Test from a VPS in Joburg:

Code: 
--2015-03-06 22:45:25--  http://hetzner-de-12.ddns.net/files/ubuntu-14.04-desktop-i386.iso
Resolving hetzner-de-12.ddns.net... 78.46.106.110
Connecting to hetzner-de-12.ddns.net|78.46.106.110|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1017118720 (970M) [application/octet-stream]
Saving to: “ubuntu-14.04-desktop-i386.iso”

21% [==========>                                         ] 216,463,456 [B]2.63M/s[/B]  eta 4m 40s
Between 20Mbps and 30Mbps.

Test from my 40Mbit VDSL:

Code: 
--2015-03-06 22:48:13--  http://hetzner-de-12.ddns.net/files/ubuntu-14.04-desktop-i386.iso
Resolving hetzner-de-12.ddns.net... 78.46.106.110
Connecting to hetzner-de-12.ddns.net|78.46.106.110|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1017118720 (970M) [application/octet-stream]
Saving to: “ubuntu-14.04-desktop-i386.iso”

 1% [                                                    ] 18,003,757   [B]215K/s[/B]  eta 44m 18s
Between 2Mbps and 4Mbps.

I don't understand why this would just suddenly happen when it was working perfectly last week! Frustrating me to no end not knowing what's going on.

TIA
 
Last edited:
How's the line stats?

Can't help on the ADSL side but can confirm the server is fine.
 
HavocXphere said:
How's the line stats?

Can't help on the ADSL side but can confirm the server is fine.
Click to expand...

My line is fine, local speeds maxing out but I'm noticing international speeds are very slow at the moment. So it may not be only Germany, I tested Ubuntu mirrors in France and the UK now and both show the same slow throughput.

I'll have to look into this.

The 3 ISP accounts I'm using to test btw are:

1 x Capped WA Business account
1 x Telkom Softcap
1 x Axxess capped

All dog slow on international links at the moment.
 
Maybe a undersea cable has a case of anchor-itis then. Difficult to say until someone else posts
 
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