How do you get debugging symbols working in linux perf tool inside Docker containers?

Question

I am using Docker containers based on the \"ubuntu\" tag and cannot get linux perf tool to display debugging symbols.

Here is what I\'m doing to demonstrate the problem.

Answer 1

Another way that doesn't require changing how you run the container (so you can profile an already running process) is to mount container's root on host using bindfs:

bindfs /proc/$(docker inspect --format {{.State.Pid}} $CONTAINER_ID)/root /foo

Then run perf report as perf report --symfs /foo

You'll have to run perf record system wide, but you can restrict it to only collect events for the specific container:

perf record -g -a -F 100 -e cpu-clock -G docker/$(docker inspect --format {{.Id}} $CONTAINER_ID) sleep 90