Massive loss in speed!

[wyntrson]

Hello,

I have a gigabit connection, and this is my speed test results with the VPS provider:

The server is fairly close (neighbor country) Distance: 250 mi (400 km) Ping: 27

My server connection speed:

And my speed with Wireguard VPN on:

Here's the problem, I know a bit of drop is OK and normal, and a lot of factors might be slowing down the connection. But 50% loss it is not normal, and 70% on upload speed is just a disappointment.
I tested wireguard config from protonvpn free servers and I lose 10%. I tried another datacenter and provider, and the results were same even though it was a local datacenter 10 miles away. I also, checked the server load, and there's barely anything going on.

Another thing I noticed is that after installing the script the speed test shows only 15% loss of speed, but once I restart the VPS, everthing goes to 50/70% loss of speed.

[digim-s15]

try to measure cpu load during benchmarks, you may be surprised.
also make sure to use kernel module for wireguard

[wyntrson]

@digim-s15

Try to measure CPU load during benchmarks, you may be surprised.

It maxes at 45% using both of my devices at the same time.

also make sure to use kernel module for wireguard

I don't know even what that is! Doesn't this script do it automatically?

[Sirherobrine23]

what i OS you use and System arch, Debian/Ubuntu with arm64 arch loss many connection's and depend you VPS config more loss connection

[wyntrson]

@Sirherobrine23
Ubuntu 22.04 and Ubuntu 20.04 amd64
2 vCPU (NOT SHARED) 3.5 Ghz 1.5 GB RAM

Client: Single user 2 devices Fiber to the premises ethernet Cat.7 2023 PC parts (Windows OS).

No other factor can cause this, both client and server are in the most optimal conditions, I would not bother opening an issue otherwise.

[Sirherobrine23]

@wyntrson Wireguard windows client will have a loss of connection because it is not a direct connection by the kernel, in windows it is fully operated by the Windows userland, in this it will have a significant loss

[wyntrson]

@wyntrson Wireguard windows client will have a loss of connection because it is not a direct connection by the kernel, in windows it is fully operated by the Windows userland, in this it will have a significant loss

@Sirherobrine23 Other WireGuard connections deliver 95% of speed 5% loss on my windows machines.

[Sirherobrine23]

@wyntrson Have you tried using iperf to test a direct connection to your machines without going through wireguard?

[Sirherobrine23]

Direct conenction:

With Wireguard connection:

Config: 4vCPUs (arm64), 24Gb Ram, Ubuntu 22.00.

htop:

Gravando.2023-08-17.201154.mp4

My conenction with wireguard and direct not loss connection download and upload, recommend check vps config.

[wyntrson]

@Sirherobrine23 I did the same with iperf3 and got the same results as you. Almost no loss. What VPS config do you have in mind?
Why when you use a wireguard connection from NordVPN, SurfShark, ProtonVPN the speeds have no overhead, almost the same speed as the connection?

[Sirherobrine23]

@wyntrson something that happens a lot is the latency between connections, so you send the request to the server foo and foo will have to connect to the bar to get a return, in addition, Wireguard uses UDP to transfer data, which is a Of the various factors for connection and packet loss, other vpn protocols use TCP for their connections. i have considerable packet degradation

[Sirherobrine23]

My config is Oracle Cloud 4VCPUs with 24Gb of Ram, 24 Clients

My house to Server locations is 230~300 Km (São Bernardo to São Paulo)