_Performance Testing PASS_

Branch: dpdk-next-net-mlx

e09204983bd28e177f67bffa600a6a3de796a668 --> performance testing pass

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
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     | -0.017                              |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.037                               |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.004                               |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.002                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.009                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.013                              |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
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     | 0.028                               |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.142                              |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.088                               |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.037                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.004                              |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.013                              |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
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     | -0.047                              |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.066                               |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.087                              |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.217                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.016                              |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.026                              |
+------------+---------+-------------------------------------+

To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/7912/

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