_Performance Testing PASS_

Branch: dpdk-next-net

20a1cbd95cf901db40a591fd9a07d7c5d985a2b8 --> performance testing pass

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Mellanox ConnectX-4 Lx 40000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 256     | 0.55592%                            |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.81697%                            |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.14225%                           |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.1488%                            |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.06277%                            |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.10797%                            |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Mellanox ConnectX-5 100000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 256     | -0.40117%                           |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.35683%                            |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.5288%                             |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.66295%                            |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.16039%                           |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.28229%                            |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Mellanox ConnectX-4 Lx 25000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 256     | 0.89805%                            |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.02417%                            |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.81775%                           |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.72943%                            |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.20043%                           |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.36982%                            |
+------------+---------+-------------------------------------+

To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/15036/

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