Download speed from container to host is incredibly slow

[Nacoma]

Network throughput is extremely poor between the host and container. It appears to be capped at about 1400kb/s in all of my tests. I've linked a repository that reliably reproduces it (for me, at least) below.

• [x] I have tried with the latest version of Docker Desktop
• [x] I have tried disabling enabled experimental features
• [x] I have uploaded Diagnostics
• Diagnostics ID: 0deb727b-5be2-42e5-895b-87de4c0c2941/20221128193150

Expected behavior

Network throughput between the container and host should not be so slow.

Actual behavior

It is slow.

Information

I am able to reproduce it reliably using the following repo: https://github.com/Nacoma/docker-desktop-for-linux-network-speed-issue. A few other users have reported the same issue on similar Linux distributions.

For me, this has been an ongoing issue since I first switched from snap-docker. Another coworker didn't start having the issue until a few weeks ago.

• Linux distro: Ubuntu
• Distro version: 22.04.1 LTS
• Docker Desktop Version: 4.14.1 (91661)

[p1-0tr]

hi @Nacoma, thanks for reporting the issue, and sorry for the inconvenience. Could you try changing useVpnkit in ~/.docker/desktop/settings.json to false?

[Nacoma]

Significantly improved performance. That seems to have resolved my issue. Feel free to close this if there's nothing to be done about the performance when using vpnkit.

[docker-robott]

There hasn't been any activity on this issue for a long time. If the problem is still relevant, mark the issue as fresh with a /remove-lifecycle stale comment. If not, this issue will be closed in 30 days.

Prevent issues from auto-closing with a /lifecycle frozen comment.

/lifecycle stale

[hhashim1]

I have a similar issue where my max speed has been less than 100 Mbps. With the above suggestion, I can get a max of 130 Mbps. I am running on a 1 Gig network. The data transfer is between two containers that are on different machines. I can do file transfer between the two computers at almost 950 Mbps.

[ajax1337]

hi I'm facing the same issue , running docker on WSL 2 , even after making the above mentioned change its the same for me .

I'm not sure if it has to do with a specific container , i get full bandwidth when testing in Openspeedtest container

Please help

[olacodes]

I am having the same issue on mac, how can I solve it please