This results in the container stopping with exit code 137. Out-of-memory errors in a container normally cause the kernel to kill the process. Commands such as free that are executed within a container will display the total amount of swap space on your Docker host, not the swap accessible to the container.

Swap reporting inside containers is unreliable and shouldn’t be used. In all cases swap only works when it’s enabled on your host. As -memory-swap sets the total amount of memory, and -memory allocates the physical memory proportion, you’re instructing Docker that 100% of the available memory should be RAM. By default, Docker for Mac is set to use 2 GB runtime memory, allocated from the total available memory on your Mac. When using Docker Desktop for Mac, the default Docker memory allocation is 2 GB. Swap can be disabled for a container by setting the -memory-swap flag to the same value as -memory. Docker memory is allocated minimally at 8 GB. This container has a total of 1024MB of memory, comprising 512MB of RAM and 512MB of swap. You can increase the RAM on the app to get faster performance by setting this number higher (for example to 3) or lower (to 1) if you want Docker for Mac to use less memory.Setting -memory without -memory-swap gives the container access to the same amount of swap space as physical memory: $ docker run -memory=512m my-app:latest If you are using docker-for-windows or docker-for-mac you can easily increase it from the Whale ð³ icon in the task bar, then go to Preferences -> Advanced:īut if you are using VirtualBox behind, open VirtualBox, Select and configure the docker-machine assigned memory.īy default, Docker for Mac is set to use 2 GB runtime memory, allocated from the total available memory on your Mac. That 2GB limit you see is the total memory of the VM in which docker runs. This can be one of the factor you not see the ram limit increase in docker containers. Restart the docker and double check that ram limit did increased. Remember to apply the ram limit increase changes. Now run your image in new container with -m=4g flag for 4 gigs ram or more.

This will set the maximum limit docker consume while running containers. VBoxManage modifyvm default -memory 4096Īllocate maximum memory to your docker machine from (docker preference -> advance ) If you want to change the default container and you are using Virtualbox, you can do it via the commandline / CLI: docker-machine stop

Memory allocated to docker on mac