[Dynamic buffer] [Mellanox] Calculate the peer response time according to the speed #1930
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Signed-off-by: Kebo Liu <kebol@nvidia.com>
Signed-off-by: Kebo Liu <kebol@nvidia.com>
stephenxs
approved these changes
Sep 24, 2021
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@neethajohn kindly reminder. can you please review? |
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@neethajohn kindly reminder. this part should go to 202111 and we need to close it soon. |
neethajohn
approved these changes
Nov 11, 2021
keboliu
changed the title
5 tasks
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Signed-off-by: Kebo Liu kebol@nvidia.com
What I did
Peer response time was deduced from a fixed value for all the ports speed. According to IEEE802.3 31B.3.7 at different operating speeds, the peer response time is also different, to have a more accurate headroom allocation, the way to calculate the peer response time shall be changed accordingly. See HLD update PR sonic-net/SONiC#870 for more info
Why I did it
To have the peer response time more accurate, calculate according to the definition in IEEE802.3 31B.3.7
How I verified it
Run buffer regression tests on various Mellanox platforms at various port speeds, cable lengths, with or w/o gearbox.
Details if related