_Performance Testing issues_

Branch: dpdk

c6c267a00a9227d7e8ade7338ad1ddb10fbefcf8 --> performance testing fail

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
GCC: 7.4
NIC: Intel Corporation Ethernet Converged Network Adapter 82599ES 10000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 2/3

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 128     | -17.311                             |
+------------+---------+-------------------------------------+
| 64         | 512     | -16.866                             |
+------------+---------+-------------------------------------+
| 64         | 2048    | -0.221                              |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
GCC: 7.4
NIC: Intel Corporation Ethernet Converged Network Adapter XL710-QDA2 40000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/2

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 512     | 0.106                               |
+------------+---------+-------------------------------------+
| 64         | 2048    | -0.123                              |
+------------+---------+-------------------------------------+

To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/7824/

UNH-IOL DPDK Community Lab

To manage your email subscriptions, visit: 
https://lab.dpdk.org/results/dashboard/preferences/subscriptions/