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-rw-r--r--resources/libraries/python/Constants.py8
1 files changed, 7 insertions, 1 deletions
diff --git a/resources/libraries/python/Constants.py b/resources/libraries/python/Constants.py
index 437c97f187..3775d98377 100644
--- a/resources/libraries/python/Constants.py
+++ b/resources/libraries/python/Constants.py
@@ -285,7 +285,13 @@ class Constants:
u"Intel-XL710": 18750000,
u"Intel-XXV710": 18750000,
u"Intel-E810CQ": 58500000,
- u"Mellanox-CX556A": 60000000, # 148809523,
+ # 2n-clx testbeds show duration stretching on high rates,
+ # depending on encapsulation TRex has to generate.
+ # 40 Mpps is still too much for dot1q (~8% stretching).
+ # 36 Mpps is around the maximal VPP throughput (l2patch 4c8t).
+ # Vxlan traffic will still show stretching at 36 Mpps (>12%),
+ # but we do not care about those tests that much.
+ u"Mellanox-CX556A": 36000000, # 148809523,
u"Amazon-Nitro-50G": 1500000,
u"virtual": 14880952,
}