Shibboleth process randomly consuming 100% CPU

[Peter Schober]

* Manolo Garcia Alvarez <mgarciaal at uoc.edu> [2019-03-11 08:37]:
> we are dealing with CPU problems in one of our three Shibboleth servers.
[...]
> This is causing us huge problems and many complaints, because the
> user requests get stuck and it causes service outages.

Btw, how are these 3 servers made into one service?
What clustering method have you implemented?

-peter