Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

[Dynamic buffer][Mellanox] Fix issue: accumulative headroom can exceed limit in rare scenario #2020

Merged
merged 1 commit into from
Nov 16, 2021
Merged

[Dynamic buffer][Mellanox] Fix issue: accumulative headroom can exceed limit in rare scenario #2020

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion cfgmgr/buffer_check_headroom_mellanox.lua
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@ end
-- Initialize the accumulative size with 4096
-- This is to absorb the possible deviation
local accumulative_size = 4096
-- Egress mirror size: 2 * maximum MTU (10k)
local egress_mirror_size = 20*1024
neethajohn marked this conversation as resolved.
Show resolved Hide resolved

local appl_db = "0"
local state_db = "6"
Expand Down Expand Up @@ -56,8 +58,9 @@ local pipeline_latency = tonumber(redis.call('HGET', asic_keys[1], 'pipeline_lat
if is_port_with_8lanes(lanes) then
-- The pipeline latency should be adjusted accordingly for ports with 2 buffer units
pipeline_latency = pipeline_latency * 2 - 1
egress_mirror_size = egress_mirror_size * 2
end
accumulative_size = accumulative_size + 2 * pipeline_latency * 1024
accumulative_size = accumulative_size + 2 * pipeline_latency * 1024 + egress_mirror_size

-- Fetch all keys in BUFFER_PG according to the port
redis.call('SELECT', appl_db)
Expand Down