How to test bandwidth to the vServer properly

webcaptcha

Hello Community.

I own a VPS 200 G10s. For some reason I've noticed very low bandwidth from my home network to the server.

How did I perform the test? Well I've created a file with truncate -s +500M test speed then just copied it from vServer to my home pc with scp.

What I got you can see on the screen https://i.imgur.com/APjqh1y.png

I did 10 rounds of testing so far from yesterday to today and actually the speed is lower than 200KB/s.

I would be grateful for any ideas on how to find the bottleneck. Yes, it could be my ISP. So no complaints so far. My home iplink is 100MB and speedtest gives me about 50-70 MB to the nearest servers.

aRaphael

You can also try yabs:

curl -sL yabs.sh | bash -s -- -fg

webcaptcha

Here is the result from my home laptop with wifi

Code

> curl -sL yabs.sh | bash -s -- -fg
# ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## #
#              Yet-Another-Bench-Script              #
#                     v2022-12-29                    #
# https://github.com/masonr/yet-another-bench-script #
# ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## #


Sat Jan 21 11:41:04 PM EET 2023


Basic System Information:
---------------------------------
Uptime     : 0 days, 8 hours, 23 minutes
Processor  : Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
CPU cores  : 8 @ 2400.004 MHz
AES-NI     : ✔ Enabled
VM-x/AMD-V : ✔ Enabled
RAM        : 7.7 GiB
Swap       : 8.0 GiB
Disk       : 225.2 GiB
Distro     : Arch Linux
Kernel     : 6.1.7-hardened1-1-hardened


iperf3 Network Speed Tests (IPv4):
---------------------------------
Provider        | Location (Link)           | Send Speed      | Recv Speed      | Ping
-----           | -----                     | ----            | ----            | ----
Clouvider       | London, UK (10G)          | 49.6 Mbits/sec  | busy            | 47.4 ms
Scaleway        | Paris, FR (10G)           | 64.6 Mbits/sec  | 27.9 Mbits/sec  | 45.1 ms
NovoServe       | North Holland, NL (40G)   | busy            | busy            | 58.1 ms
Uztelecom       | Tashkent, UZ (10G)        | 76.6 Mbits/sec  | 12.2 Mbits/sec  | 112 ms
Clouvider       | NYC, NY, US (10G)         | 71.1 Mbits/sec  | 24.3 Mbits/sec  | 114 ms
Clouvider       | Dallas, TX, US (10G)      | 63.1 Mbits/sec  | 18.3 Mbits/sec  | 161 ms
Clouvider       | Los Angeles, CA, US (10G) | 46.1 Mbits/sec  | 18.9 Mbits/sec  | 193 ms


YABS completed in 4 min 7 sec

Alles anzeigen

mfnalex

Run yabs on the server please. Do you now get better results, or still only < 200kbit ?

Olivetti

first try both IPv4 & IPv6 routes to your vps with "mtr -4|-6…". look for "Packets/Loss" and "Pings/Avg".

maybe it's a IPv6 problem and you could stick to v4 -> scp -4… / scp -6…

webcaptcha

Zitat von mfnalex

Run yabs on the server please. Do you now get better results, or still only < 200kbit ?

Yes. 500MB file that is copying over scp still in progress for almost 3 hours so far. It's even 25-40KB.

On the vServer:

Code

# ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## #
#              Yet-Another-Bench-Script              #
#                     v2022-12-29                    #
# https://github.com/masonr/yet-another-bench-script #
# ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## #


Sat 21 Jan 2023 11:12:54 PM CET


Basic System Information:
---------------------------------
Uptime     : 35 days, 5 hours, 52 minutes
Processor  : QEMU Virtual CPU version 2.5+
CPU cores  : 2 @ 2294.590 MHz
AES-NI     : ✔ Enabled
VM-x/AMD-V : ❌ Disabled
RAM        : 1.9 GiB
Swap       : 0.0 KiB
Disk       : 39.2 GiB
Distro     : Debian GNU/Linux 11 (bullseye)
Kernel     : 5.10.0-20-amd64


iperf3 Network Speed Tests (IPv4):
---------------------------------
Provider        | Location (Link)           | Send Speed      | Recv Speed      | Ping
-----           | -----                     | ----            | ----            | ----
Clouvider       | London, UK (10G)          | 865 Mbits/sec   | 545 Mbits/sec   | 22.0 ms
Scaleway        | Paris, FR (10G)           | 912 Mbits/sec   | 590 Mbits/sec   | 26.9 ms
NovoServe       | North Holland, NL (40G)   | 980 Mbits/sec   | 920 Mbits/sec   | 10.8 ms
Uztelecom       | Tashkent, UZ (10G)        | 387 Mbits/sec   | 260 Mbits/sec   |
Clouvider       | NYC, NY, US (10G)         | 410 Mbits/sec   | 237 Mbits/sec   | 90.6 ms
Clouvider       | Dallas, TX, US (10G)      | 335 Mbits/sec   | 178 Mbits/sec   | 127 ms
Clouvider       | Los Angeles, CA, US (10G) | 326 Mbits/sec   | 344 Mbits/sec   | 150 ms


iperf3 Network Speed Tests (IPv6):
---------------------------------
Provider        | Location (Link)           | Send Speed      | Recv Speed      | Ping
-----           | -----                     | ----            | ----            | ----
Clouvider       | London, UK (10G)          | 866 Mbits/sec   | 503 Mbits/sec   | 22.2 ms
Scaleway        | Paris, FR (10G)           | 684 Mbits/sec   | 604 Mbits/sec   | 32.1 ms
NovoServe       | North Holland, NL (40G)   | 967 Mbits/sec   | 932 Mbits/sec   | 10.7 ms
Uztelecom       | Tashkent, UZ (10G)        | 450 Mbits/sec   | 2.45 Mbits/sec  | 185 ms
Clouvider       | NYC, NY, US (10G)         | 396 Mbits/sec   | 515 Mbits/sec   | 90.5 ms
Clouvider       | Dallas, TX, US (10G)      | 263 Mbits/sec   | 206 Mbits/sec   | 127 ms
Clouvider       | Los Angeles, CA, US (10G) | 297 Mbits/sec   | 478 Mbits/sec   | 150 ms


YABS completed in 6 min 0 sec

Alles anzeigen

RAD750

Please do it in rescue system and verify that the download server isnt the issue

webcaptcha

Zitat von Olivetti

first try both IPv4 & IPv6 routes to your vps with "mtr -4|-6…". look for "Packets/Loss" and "Pings/Avg".

I have IPv4 only.

mtr test is still running for more comprehensive results. So far I got

2023-01-22_00-34.png

bjo

Which ISP do you have?

Olivetti

Zitat von webcaptcha

mtr test is still running for more comprehensive results. So far I got

looks good. press "q" for quit.

can you try to upload (scp) a big file?

webcaptcha

Zitat von Olivetti

can you try to upload a big file?

Upload in a good shape. Like 8MB/s

Zitat von RAD750

Please do it in rescue system and verify that the download server isnt the issue

I need some time to figure out how to do it. Maybe read the wiki

Zitat von bjo

Which ISP do you have?

Will it help to diagnose the issue?

webcaptcha

Zitat von RAD750

Please do it in rescue system and verify that the download server isnt the issue

For some reason can't log in within SSH with password for root user which I get from SCP

webcaptcha

Zitat von RAD750

Please do it in rescue system and verify that the download server isnt the issue

I copied test file over SCP in rescue mode. Download speed is the same 50KB or so. Upload to the server is good as without rescue mode.

Olivetti

time for opening a ticket at netcup's support.

frank_m

I don't think, netcup is the reason. yabs is ok to all targets from the server. This means, as well local connectivity and peering are ok. There is nothing more netcup can do about it.

The figures at your pc at home are somehow strange. Download is much slower than upload, usually its the other way around. In the mtr the third hop is DE-CIX, so you are in Europe, but the European targets in yabs are quite bad, 2 have even a timeout.

Are you sure your network setup at home is really ok? This looks not good for me.

bjo

Zitat von webcaptcha

Will it help to diagnose the issue?

Well, why should I ask it otherwise? So, please show a mtr from your home to your server and the other direction.

Tags