I have 96% of CPU Interrupt utilization with only 96kpps.
Need I replace my routers with more powerful router ?
My test bench is compose by 2 routers (c7200p-advsecurityk9-mz.124-15.T4.bin) connected together with ATM PA-A6-OC3-MM.
I'm using a Smartbits tester connected by 3 Fastethernet to each routeur. I send a total of 96kpps (trame size: 312 bytes) over its 3 Fastethernet interface connected to the first router, and receiving them on its other 3 Fastethernet connected to the second router.
With a light configuration (only one static route and interface IP addressing), I have this result:
Result for 96kpps (half in on direction, and half in the other direction):
Total CPU Utilization: 41%
Process Utilization: 1%
Interrupt Utilization: 40%
I have already 40% of Interrupt Utilization.
Now I use my complete configuration file: service-policy input on 2 Fastethernet, and service-policy output on ATM, OSPF for routing between, all interface Policy and CEF switched.
Result for 96kpps:
Total CPU Utilization: 94%
Process Utilization: 0%
Interrupt Utilization: 94%
=> Great, all packets are CEF switched (service policy managed by hardware) and no packet dropped
But, I'm using a 7204 with NPE-G2 that theoretically support 2Mppsâ¦
How to explain that I'm already obtain 94% of Interrupt Utilization with only 96kpps ?
i guess u have lot of service poilices working no your router. Remember, the source based routing is one of the major cpu/memory hogs. Try to eliminate some of the policies with tradiontal traffic engineering and paste the results.