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What do you consider "performance"? I.e. what do you want to know/measure?
The performance spec numbers I believe you're quoting is a theoretical maximum PPS (for minimum size Ethernet based packets) and the bandwidth provided is L3. Real-world performance can be both much slower or much faster.
Your 36 Mbps is the incorrect sum of your interface bandwidths. Looks like you've slipped a decimal.
For PPS, you only need to account for bandwidth once, i.e. normally what comes in ingress on one port becomes egress on another port.
Normally, the sum of all the ingress matches the sum of all the egress. In your case, you've posted 2,224,000 ingress on f0/0 and 277,000 ingress on f0/1, i.e. about 2.5 Mbps.
You've posted 850,000 egress on f0/0 and 437,000 egress on f0/1, i.e. about 1.3 Mbps.
There's about 1.2 Mbps unaccounted for. More interfaces? ACLs?
