Add multiple process option for pfc_gen.py #14710
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Description of PR
Summary:
Fixes # (issue)
Type of change
Back port request
Approach
What is the motivation for this PR?
Using multiple process to enhance the fanout sending package performance to reduce the failure rate for pfcwd cases.
With this enhancement, some pfcwd related cases on broadcom platform would failure sometimes.
How did you do it?
Add an option "-m" for multiple process for pfc_gen.py.
How did you verify/test it?
mellanox:
https://elastictest.org/scheduler/testplan/66f27ab91e021eb2510aba07
broadcom:
https://elastictest.org/scheduler/testplan/66f278da4216a91fd43d97cd
cisco:
https://elastictest.org/scheduler/testplan/66f278920369ccd340b3ea7f
Any platform specific information?
Supported testbed topology if it's a new test case?
Documentation