[action] [PR:13976] Degrade PFC storm detection in PFCWD all ports storm test#14092
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bingwang-ms merged 1 commit intosonic-net:202405from Sep 13, 2024
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…13976) * Degrade PFC storm detection logic in pfcwd_all_port_storm test
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Original PR: #13976 |
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Description of PR
Summary:
This PR is to degrade the PFC storm detection logic on Mellanox platform to workaround the performance issue of leaf-fanout switch.
The
test_pfcwd_all_port_storm.pyis failing because leaf fanout switch can't send enough PFC pause frames to trigger PFC storm after PR sonic-net/sonic-swss#3036 .There are different workaround method on Onyx and Mellanox-SONiC leaf-fanout, but there is no workaround for DUT that is not connected to Mellanox leaf-fanout switch.
This PR workaround the issue by copying the old
pfc_detect_mellanox.luato degrade the PFC storm detection logic to make PFC storm easier to be triggered.As the test is to verify there is no issue when PFCWD is firing on all ports, this change doesn't change the coverage of test.
Type of change
Back port request
Approach
What is the motivation for this PR?
This PR workaround the issue by copying the old
pfc_detect_mellanox.luato degrade the PFC storm detection logic to make PFC storm easier to be triggered.How did you do it?
Cppy the old
pfc_detect_mellanox.luato degrade the PFC storm detection logic.How did you verify/test it?
The change is verified on a Mellanox DUT.
Any platform specific information?
Mellanox platform specific.
Supported testbed topology if it's a new test case?
Not a new test case.
Documentation