|FAILURE| pw125435 [PATCH] net/tap: resolve stringop-overflow with gcc 12 on ppc64le

|FAILURE| pw125435 [PATCH] net/tap: resolve stringop-overflow with gcc 12 on ppc64le

[dpdklab]

Test-Label: iol-intel-Performance
Test-Status: FAILURE
http://dpdk.org/patch/125435

_Performance Testing issues_

Submitter: David Christensen <drc@linux.vnet.ibm.com>
Date: Wednesday, March 22 2023 21:24:39 
DPDK git baseline: Repo:dpdk
  Branch: master
  CommitID:1a80f6062cf74e4b689b8b9a4f905a24efec527a

125435 --> performance testing fail

Test environment and result as below:

Arm Ampere Altra - Ubuntu 20.04.4
Kernel: 5.4.0-137-generic aarch64
Compiler: gcc 9.4
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 | num_cpus | num_threads |  throughput difference from  |
|            |         |          |             |           expected           |
+============+=========+==========+=============+==============================+
| 64         | 512     | 1        | 1           | -1.0%                        |
+------------+---------+----------+-------------+------------------------------+
| 64         | 2048    | 1        | 1           | -0.0%                        |
+------------+---------+----------+-------------+------------------------------+

Ubuntu 20.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Intel Corporation Ethernet Converged Network Adapter 82599ES 10000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+----------+-------------+---------+------------+------------------------------+
| num_cpus | num_threads | txd/rxd | frame_size |  throughput difference from  |
|          |             |         |            |           expected           |
+==========+=============+=========+============+==============================+
| 1        | 2           | 128     | 64         | -1.0%                        |
+----------+-------------+---------+------------+------------------------------+
| 1        | 2           | 512     | 64         | 0.1%                         |
+----------+-------------+---------+------------+------------------------------+
| 1        | 2           | 2048    | 64         | 0.1%                         |
+----------+-------------+---------+------------+------------------------------+
| 1        | 1           | 128     | 64         | 0.2%                         |
+----------+-------------+---------+------------+------------------------------+
| 1        | 1           | 512     | 64         | 0.3%                         |
+----------+-------------+---------+------------+------------------------------+
| 1        | 1           | 2048    | 64         | 0.1%                         |
+----------+-------------+---------+------------+------------------------------+

Ubuntu 20.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Intel Corporation Ethernet Converged Network Adapter XL710-QDA2 40000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 1/4

Detail performance results: 
+----------+-------------+---------+------------+------------------------------+
| num_cpus | num_threads | txd/rxd | frame_size |  throughput difference from  |
|          |             |         |            |           expected           |
+==========+=============+=========+============+==============================+
| 1        | 2           | 512     | 64         | 0.1%                         |
+----------+-------------+---------+------------+------------------------------+
| 1        | 2           | 2048    | 64         | -1.5%                        |
+----------+-------------+---------+------------+------------------------------+
| 1        | 1           | 512     | 64         | -3.4%                        |
+----------+-------------+---------+------------+------------------------------+
| 1        | 1           | 2048    | 64         | -5.7%                        |
+----------+-------------+---------+------------+------------------------------+

To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/patchsets/25842/

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