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-.. _mrr_throughput:
-
-MRR Throughput
---------------
-
-Maximum Receive Rate (MRR) tests are complementary to MLRsearch tests,
-as they provide a maximum "raw" throughput benchmark for development and
-testing community. MRR tests measure the packet forwarding rate under
-the maximum load offered by traffic generator over a set trial duration,
-regardless of packet loss.
-
-MRR tests are currently used for following test jobs:
-
-- Report performance comparison: 64B, IMIX for vhost, memif.
-- Daily performance trending: 64B, IMIX for vhost, memif.
-- Per-patch performance verification: 64B.
-- Initial iterations of MLRsearch and PLRsearch: 64B.
-
-Maximum offered load for specific L2 Ethernet frame size is set to
-either the maximum bi-directional link rate or tested NIC model
-capacity, as follows:
-
-- For 10GE NICs the maximum packet rate load is 2x14.88 Mpps for 64B, a
- 10GE bi-directional link rate.
-- For 25GE NICs the maximum packet rate load is 2x18.75 Mpps for 64B, a
- 25GE bi-directional link sub-rate limited by 25GE NIC used on TRex TG,
- XXV710.
-- For 40GE NICs the maximum packet rate load is 2x18.75 Mpps for 64B, a
- 40GE bi-directional link sub-rate limited by 40GE NIC used on TRex
- TG,XL710. Packet rate for other tested frame sizes is limited by
- PCIeGen3 x8 bandwidth limitation of ~50Gbps.
-
-MRR test code implements multiple bursts of offered packet load and has
-two configurable burst parameters: individual trial duration and number
-of trials in a single burst. This enables more precise performance
-trending by providing more results data for analysis.
-
-Burst parameter settings vary between different tests using MRR:
-
-- MRR individual trial duration:
-
- - Report performance comparison: 1 sec.
- - Daily performance trending: 1 sec.
- - Per-patch performance verification: 10 sec.
- - Initial iteration for MLRsearch: 1 sec.
- - Initial iteration for PLRsearch: 5.2 sec.
-
-- Number of MRR trials per burst:
-
- - Report performance comparison: 10.
- - Daily performance trending: 10.
- - Per-patch performance verification: 5.
- - Initial iteration for MLRsearch: 1.
- - Initial iteration for PLRsearch: 1.