I have been looking at this for quite a while. We run a server that has multiple Docker containers, one of them has a Mono server application written in c#.
The base image is phusion base (http://phusion.github.io/baseimage-docker/)
This is working well up until now, this evening, we suddenly started seeying huge CPU spikes, slowing down our entire website, even making it completely inaccesible.
I haven't changed anything whatsoever since a week or so. I highly doubt this issue came because of a source code error. Also the same app (as in exactly the same executable) works fine on the same server outside docker or on my mac. Things I have tried:
- Running app on my local computer (worked, no cpu spikes)
- Running app outside docker (but on the same server) (worked with no cpu spikes)
- Rebuilding image without cache (didnt work)
If anyone can help us that would be awesome! I'm more than willing to give any more details ;) Thanks a lot in advance!