Docker Resources Management Concepts

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External

Internal

Overview

The docker runtime will kill a process that it is attempting to exceed the resource limits, such as memory specified with -m.

The resource usage statistics for running containers can be displayed with:

docker stats

Controlling CPU

CPU Share Constraint

https://docs.docker.com/engine/reference/run/#cpu-share-constraint
Also see:
cgroups - Controlling Relative Share of CPU

CPU Quota Constraint

https://docs.docker.com/engine/reference/run/#cpu-quota-constraint
Also see:
cgroups - Controlling CPU Throttling

User Memory Constraints

Also see:
CGroups Memory Limit

Organizatorium

  • Docker switches (-m, -memory and -memory-swap) instruct the Linux kernel to kill the process running inside a container if it tries to exceed the specified limit.