CCR1009-8G-1S-1S+ height cpu 1 management

RouterOS General
1

Hi. My CCR1009-8G-1S-1S+ last time height cpu 1 management. ROS 6.46.8
The router only has eoip, vlan and 10 vlan bridging to 1 vlan
how to find what is loading the cpu?

2

I brought out a log IP fragment and I see a lot of messages
firewall,info raw-fragment prerouting:

3

eoip suggest tunneling. And tcp fragmentation.
Find out max mtu on tunnel, and setup mssclamp accordingly