4 Performance trending relies on Maximum Receive Rate (MRR) tests.
5 MRR tests measure the packet forwarding rate, in multiple trials of set
6 duration, under the maximum load offered by traffic generator
7 regardless of packet loss. Maximum load for specified Ethernet frame
8 size is set to the bi-directional link rate.
10 Current parameters for performance trending MRR tests:
12 - **Ethernet frame sizes**: 64B (78B for IPv6 tests) for all tests, IMIX for
13 selected tests (vhost, memif); all quoted sizes include frame CRC, but
14 exclude per frame transmission overhead of 20B (preamble, inter frame
16 - **Maximum load offered**: 10GE and 40GE link (sub-)rates depending on NIC
17 tested, with the actual packet rate depending on frame size,
18 transmission overhead and traffic generator NIC forwarding capacity.
20 - For 10GE NICs the maximum packet rate load is 2* 14.88 Mpps for 64B,
21 a 10GE bi-directional link rate.
22 - For 40GE NICs the maximum packet rate load is 2* 18.75 Mpps for 64B,
23 a 40GE bi-directional link sub-rate limited by the packet forwarding
24 capacity of 2-port 40GE NIC model (XL710) used on T-Rex Traffic
27 - **Trial duration**: 1 sec.
28 - **Number of trials per test**: 10.
29 - **Test execution frequency**: twice a day, every 12 hrs (02:00,
32 Note: MRR tests should be reporting bi-directional link rate (or NIC
33 rate, if lower) if tested VPP configuration can handle the packet rate
34 higher than bi-directional link rate, e.g. large packet tests and/or
35 multi-core tests. In other words MRR = min(VPP rate, bi-dir link rate,