This article presents an insight into a peculiar interaction between Java GC and Linux scheduler on the background of Linux containerization technology - the CGROUP.
IMHO the CGROUP only amplifies the discussed impact, that exists anyway.

A short summary:
Linux scheduler allocates a time slice for an application to run. When the time slice is depleted (i.e. all the application threads together have eaten up all the time resource), the application is stopped until next time slice is allocated.
Many-threaded GC is able to deplete the time slice very quickly, causing Stop-The-World effect, even in generally concurrent GC design.

https://engineering.linkedin.com/blog/2016/11/application-pauses-when-running-jvm-inside-linux-control-groups