The system started hanging without any change known to the system. Users always reported that Jenkins was sometimes slow, but I guess now it passed that threshold.
I'm fairly new to thread dump and heap dump analysis, but from what I've see there is a bottle neck somewhere.
- Garbage collection looks ok
- System and JVM resources seem are not exceeded.
I'm attaching the system info and a thread dumps from various freezes. Please let me know what else should I add. For some reason the /manage page doesn't want to load