# Extremely high CPU usage with WireGuard

**URL:** <https://community.traefik.io/t/extremely-high-cpu-usage-with-wireguard/25401>\
**Category:** Traefik v3 (latest)\
**Tags:** udp, docker\
**Created:** [December 4, 2024, 5:57am UTC](https://community.traefik.io/t/extremely-high-cpu-usage-with-wireguard/25401 "2024-12-04T05:57:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![LegendaryFire](https://avatars.discourse-cdn.com/v4/letter/l/c89c15/32.png) [@LegendaryFire](https://community.traefik.io/u/LegendaryFire)\
**Post date:** [December 4, 2024, 5:57am UTC](https://community.traefik.io/t/extremely-high-cpu-usage-with-wireguard/25401/1 "2024-12-04T05:57:43Z")

</div>

I have Traefik configured in Docker, and WireGuard is working fine but I noticed when uploading a large file to my server, Traefik CPU usage uses up every bit of my CPU utilization on an Intel i3 12100.

The labels I'm running on the WireGuard container are as follows.

```auto
traefik.enable: "true"
traefik.udp.routers.wireguard.entryPoints: "wireguard"
traefik.udp.routers.wireguard.service: "wireguard"
traefik.udp.services.wireguard.loadBalancer.server.port: "51820"

```

Then on Traefik the command I'm using is this.

```auto
--entryPoints.wireguard.address=:51820/udp

```

Am I perhaps missing something, or is there a reason that the CPU utilization is so high? I was only able to upload at 6MBps, as opposed to 45MBps when not routing through Traefik.

---

<div class="post-metadata">

**Author:** ![fw42](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/fw42/32/11257_2.png) [@fw42](https://community.traefik.io/u/fw42)\
**Post date:** [June 12, 2026, 4:28pm UTC](https://community.traefik.io/t/extremely-high-cpu-usage-with-wireguard/25401/2 "2026-06-12T16:28:45Z")

</div>

Did you ever figure out what caused this? Seeing something similar with a different udp service (not wireguard).

---

<div class="post-metadata">

**Author:** ![bluepuma77](https://avatars.discourse-cdn.com/v4/letter/b/a9adbd/32.png) [@bluepuma77](https://community.traefik.io/u/bluepuma77)\
**Post date:** [June 15, 2026, 6:13am UTC](https://community.traefik.io/t/extremely-high-cpu-usage-with-wireguard/25401/3 "2026-06-15T06:13:14Z")

</div>

If you think it’s a bug, create an issue with the devs at [Traefik Github](https://github.com/traefik/traefik).