I'm having high CPU utilization due to interrupts on my 7206vxr-npe-g2. on peak hours interrupt is reaching up to 80%. I've check the cef configuration its all enabled on my interfaces, currently i have 2 FE ports one connected to an ISP and on to our LAN. At peak hours, both interfaces is using around 70M each.
But on non-peak hours where traffic on both interfaces are just around 12M each utilization is still quite high on 30% and all due to interrupts.
I can see incrementing unknown protocol drops on my fe5/0 interface what is causing this drops.
Please help me to analyze this problem. I've attached the logs and my isp graph utlization to give you something to start with.
Router#sh proc cpu | exc 0.00
CPU utilization for five seconds: 53%/53%; one minute: 52%; five minutes: 52%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
43 26784 99632 268 0.15% 0.10% 0.08% 0 Per-Second Jobs
141 1660 24689294 0 0.15% 0.12% 0.13% 0 HQF Shaper Backg