Command
docker topExplanation
docker top displays active processes inside containers using the host’s ps command. It shows PIDs, users, and command lines—useful for diagnosing stuck or high-CPU processes.
Common Use Cases
- •Debug frozen containers
- •Check resource-hungry processes inside containers
Best Practices
- ✓Combine with docker stats for performance debugging
Common Mistakes to Avoid
- ⚠Assuming docker top provides live updating output like Linux top—it’s a static snapshot
Troubleshooting
Problem: No output from docker top
Solution: Ensure container is running and has active processes.
Examples
Show processes in container
docker top my_container