[Bug 906] Disable faulty Ubuntu 20.04 X710 performance test

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=906

            Bug ID: 906
           Summary: Disable faulty Ubuntu 20.04 X710 performance test
           Product: lab
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: UNH infra
          Assignee: ci at dpdk.org
          Reporter: ktraynor at redhat.com
                CC: dpdklab at iol.unh.edu
  Target Milestone: ---

The below system is reporting performance test failures [1] on a documentation
change [2]. It's clear that it is false for me as it is documentation, but for
anyone submitting a datapath patch it would concerning and they would waste
time investigating. I suggest to disable until this test is stable. Full
dashboard at [3].

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: 
+------------+---------+----------+-------------+------------------------------+
| frame_size | txd/rxd | num_cpus | num_threads |  throughput difference from 
|
|            |         |          |             |           expected          
|
+============+=========+==========+=============+==============================+
| 64         | 512     | 1        | 1           | -0.3%                       
|
+------------+---------+----------+-------------+------------------------------+
| 64         | 2048    | 1        | 1           | 0.4%                        
|
+------------+---------+----------+-------------+------------------------------+
| 64         | 512     | 1        | 2           | -2.4%                       
|
+------------+---------+----------+-------------+------------------------------+
| 64         | 2048    | 1        | 2           | -7.1%                       
|
+------------+---------+----------+-------------+------------------------------+



[1] http://mails.dpdk.org/archives/test-report/2021-December/248376.html
[2]
http://patches.dpdk.org/project/dpdk/patch/20211213164858.74244-2-ktraynor@redhat.com/
[3] https://lab.dpdk.org/results/dashboard/patchsets/20487/

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