[c-nsp] ASR1009x and 10G thruput

[hank at interall.co.il]

When we collected the packet traces on interface TenGigabitEthernet0/1/7
and noticed drops with Taildrops with Feature QoS as can be seen below. 
The
problem is there is no QoS on the interface.

teg#show platform packet-trace summary

Pkt   Input                     Output                    State  Reason

0     Te0/1/4                   Te0/1/7                   DROP   23
(TailDrop)

1     Te0/1/4                   Te0/1/7                   DROP   23
(TailDrop)

2     Te0/1/4                   Te0/1/7                   DROP   23
(TailDrop)

3     Te0/1/4                   Te0/1/7                   DROP   23
(TailDrop)

What feature in IOS-XE can possibly cause Taildrops?

Thanks,
Hank