_Performance Testing PASS_

Branch: dpdk

c3e89f69facbbfe131b6a6723665d48801ac943d --> performance testing pass

Test environment and result as below:

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     | -0.485                              |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.112                               |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.017                              |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.260                               |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.047                              |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.036                              |
+------------+---------+-------------------------------------+

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     | 0.107                               |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.064                               |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.011                              |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.013                               |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.001                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0                                   |
+------------+---------+-------------------------------------+

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     | -0.129                              |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.134                              |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.063                              |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.018                               |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.016                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.009                               |
+------------+---------+-------------------------------------+

https://lab.dpdk.org/results/dashboard/tarballs/7471/

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