wrong interface speed

I have tested the NFA,but that it collected the data seens not correct.
The flowed interface is 10GA , and the true speed is above to 200Maps. But the GUI shows just 0% of the interface in .

the configuration of 7609:
global set:
ip flow-cache timeout active 1
mls ip multicast flow-stat-timer 9
mls netflow usage notify 60 120
mls flow ip interface-full
no mls flow ipv6
ip flow-export source Loopback1
ip flow-export version 5
ip flow-export destination ******* 9996
ip flow-aggregation cache prefix

interface mode set:
ip flow ingress
ip route-cache flow
mls netflow sampling

please help me, what can i do?