| The `docker container pause` command suspends all processes in the specified containers. |
| On Linux, this uses the freezer cgroup. Traditionally, when suspending a process |
| the `SIGSTOP` signal is used, which is observable by the process being suspended. |
| With the freezer cgroup the process is unaware, and unable to capture, |
| that it is being suspended, and subsequently resumed. On Windows, only Hyper-V |
| containers can be paused. |
| |
| See the [freezer cgroup documentation] |
| (https://www.kernel.org/doc/Documentation/cgroup-v1/freezer-subsystem.txt) for |
| further details. |
| |
| **docker-container-unpause(1)** to unpause all processes within a container. |
