KPI degraded due to UMP overload alarm

OSS and NOC
1

Dear Experts.

I’m getting UMP overload alarm and during same time all the kpi’s are degraded.
What are the reasons of UMP overload alarm?
Vendor is Samsung.

2

Check the CPU load.

3

Cpu load is high.
During busy hours going upto 95%.

4

Does site has 3G and 4G?

5

Site is 4G only.