Problem Set-up: two Macs on the same local network; the first runs an MQTT broker (mosquitto); the second runs Docker for Mac. Two C++ programs run on the second Mac and exchange data multiple times through the MQTT broker (on the first Mac). Native run: when I ran the two C++ programs natively, the network performance was very fast as expected. Best laptop sleeve for macbook pro 15. The programs were built with XCode 7.3. Docker runs: when I ran either of the C++ programs, or both of them, in Docker, the network performance dropped to very slow. Rough measurements by my watch told me that it was at least 8 times slower, maybe more, than the native run.

Happy to hear it’s working now - During the upgrade, we execute a reboot, which means that if your container wasn’t set to restart --restart=always then it wouldn’t come back up after a reboot of Docker for Mac. Expected behavior I need a way to specify proxy settings to the VM so that I can pull images from docker hub. Even if I could get it to read my PROXY_URL env, that’d be enough I think! Actual behavior I dont see a way to do it Information docker-for-mac beta 6 OSX 10.10.5 (gotta love corporate images).

The Docker image is based on ubuntu:latest, and the programs were built by gcc (Ubuntu 5.4.0-6ubuntu1~16.04.1) 5.4.0 20160609. I tried to use the host network (–network=“host” in Docker run) but it didn’t help. I am new to Docker and I don’t know how to improve the network performance. Are there any settings to make the network performance close to the native run? I would expect it to be slower, but not this slow. P/S: in theory, the Docker runs could have been slow not because of the networking but because the C++ programs were generally slow in Docker.

But I doubt this was the case because in my experience, the general performance of C++ code in Docker is about as fast as in the native environment. Information Docker for Mac: version: mac-v1.12.0-beta20 OS X: version 10.11.4 (build: 15E65) logs: /tmp/20100.tar.gz [OK] docker-cli [OK] app [OK] moby-syslog [OK] virtualization [OK] menubar [OK] system [OK] osxfs [OK] db [OK] slirp [OK] moby-console [OK] logs [OK] vmnetd [OK] env [OK] moby [OK] driver.amd64-linux Powered by, best viewed with JavaScript enabled.

I’ve recently re-installed current docker for mac on macos (10.11.4 El Capitan) and all network access from docker seem to be failing. I get an error when attempting to check for updates “An error occrred in retrieving update information”, diagnose and feedback “Failure: Could not upload diagnostic data to remote server (docker-diagnose exit code is 1)” and when trying to pull images “Error response from daemon: Get Service Unavailable”.

If I run the diagnose only I get all “OK”. I tried installing docker toolbox and re-installing docker for mac but the same problem continues.

I’m assuming at this point some type of network configuration problem but can’t understand why this is happening. My local subnet is running at 192.168.1.0 and it connects to the internet via a gateway router on 192.168.0.0.

I don’t have any other local networking problems. Suggestions are welcome.

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