X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FConstants.py;h=3775d9837793d66f1d94ba04450b9692eb428c21;hb=1be82a8542da6764f4ec8562cbcece0c65c8173a;hp=437c97f187d9b901be2053ab0aaa02a8a9b3dcf6;hpb=5c7cf5a09ec1cd7ebc4077981de84c4f18aa8738;p=csit.git

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,
     }