Container resource usage stats in Docker - Cheat Sheet & Quick Revision

Recall & Review

beginner

What command shows real-time resource usage statistics of Docker containers?

The command docker stats displays live CPU, memory, network, and disk usage for running containers.

beginner

What resource metrics does docker stats provide by default?

It shows CPU %, memory usage and limit, memory %, network I/O, block I/O, and PIDs for each running container.

beginner

How can you view stats for a specific container only?

Use docker stats <container_name_or_id> to see resource usage for just that container.

intermediate

What does the memory % value represent in docker stats output?

It shows the percentage of the container's memory limit currently being used.

beginner

Can docker stats be used to monitor stopped containers?

No, docker stats only shows stats for running containers.

Which command shows live CPU and memory usage of Docker containers?

A docker stats

B docker ps

C docker inspect

D docker logs

docker stats displays real-time resource usage of running containers.

What does the memory usage value in docker stats represent?

A Total system memory

B Swap memory used

C Memory limit of the host

D Memory used by the container

It shows how much memory the container is currently using.

Can docker stats show stats for containers that are stopped?

A Only if specified with a flag

B Yes, for all containers

C No, only running containers

D Only for paused containers

docker stats only works for running containers.

How do you limit docker stats output to a single container?

A docker stats <container_id_or_name>

B docker stats --limit 1

C docker stats --filter running

D docker stats --single

Specify the container name or ID after docker stats to see stats for that container only.

Which of these is NOT shown by default in docker stats?

A CPU %

B Disk usage of container files

C Memory %

D Network I/O

docker stats does not show disk usage of container files, only block I/O.

Explain how to use docker stats to monitor container resource usage and what key metrics it shows.

Think about what you want to see live about your containers.

Describe how you would check resource usage for a single Docker container using command line.

Focus on filtering the stats command.