This is a question and concern. With every container a containerd-shim process is started. It seems to be that that process consumes between 3-5mb (excluding shared memory). Doing some quick, not so scientific tests, I have seen the memory usage of my system take ~400mb more than 1.10.3 to launch 100 nginx containers. This was a quick cursory test, so I wanted to ask the maintainers how they envision this working going forward, before I dug in much more doing performance tests on 1.11. I also have a concern about VM overcommit because each containerd-shim process consumes over 200mb of virtual memory.

I honestly don't see how this approach will scale with this intermediate process. With the current usage pattern if I run 500 containers (which is a very common use case), I will be using 2gb of memory just for Docker. Am I missing something obvious here? This doesn't seem good.