Eduardo Nunes
Docker: Saving memory and CPU
Docker spawns a docker-proxy
application whenever you run a docker container.
The application is responsible to proxy ports between the host machine and
the container. I’m not sure when but newer versions of Linux Kernel support
a special network flag that makes docker-proxy
obsolete.
In order to save memory and CPU you must run docker daemon setting the flag
--userland-proxy=false
.
DOCKER_OPTS="--userland-proxy=false"