The Wireguard implementation will be your Kernel Wireguard implementation if it is present. Otherwise, the Go user space Wireguard implementation is used, which is based on imported packages from git.zx2c4.com/wireguard-go.
Wireguard is often known as so much faster than OpenVPN. Let's find out!
-
Gluetun
v3.24.0is used -
The Mullvad VPN service provider is used
-
Gluetun is connected to the closest VPN server. This is to better measure the performance of the protocol, instead of the various bandwidth bottlenecks on a further away server.
-
The following command is used to measure bandwidth performance:
docker run -it --rm --network=container:gluetun alpine:3.14 /bin/sh -c "apk add speedtest-cli && speedtest-cli"
| Host OS | CPU | CPU arch | CPU cores | Protocol | Download Mbps | Upload Mbps | Wireguard download increase | Wireguard upload increase |
|---|---|---|---|---|---|---|---|---|
| Windows with Docker desktop on WSL2 | AMD 5900x | amd64 |
12 |
OpenVPN | 299.24 |
463.69 |
||
| Windows with Docker desktop on WSL2 | AMD 5900x | amd64 |
12 |
Wireguard | 298.55 |
493.49 |
-0.23% | +5% |
| Arch Linux | AMD 2600x | amd64 |
6 |
OpenVPN | 645.91 |
481.25 |
||
| Arch Linux | AMD 2600x | amd64 |
6 |
Wireguard | 673.37 |
561.28 |
+4.2% | +16.6% |
| Raspbian (32 bit) | Raspberry Pi 4 A72 | arm64 |
4 |
OpenVPN | 50 |
10 |
||
| Raspbian (32 bit) | Raspberry Pi 4 A72 | arm64 |
4 |
Wireguard | 57 |
10 |
+14% |
+0% |
Conclusions:
- Docker desktop on Windows sucks network performance wise 😆
- On the usual amd64 CPUs, Wireguard is only 4.2% faster than OpenVPN (comparing the 2 maximum bandwidths
645.91and673.37) - On low power devices such as Raspberry Pis, the performance jump is more significant, with a 14% download bandwidth increase over OpenVPN (tested by @granroth)
Further investigations:
- Does Wireguard have a bigger impact on many cores and low single thread performance CPUs?