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Overview
========
TRex performance test results are reported for a range of processors.
For description of physical testbeds used for TRex performance tests
please refer to :ref:`tested_physical_topologies`.
Logical Topology
----------------
CSIT TRex performance tests are executed on physical testbeds described
in :ref:`tested_physical_topologies`. Logical topology use 1 nic that has
loopback connected ports. See figure below.
.. only:: latex
.. raw:: latex
\begin{figure}[H]
\centering
\graphicspath{{../_tmp/src/trex_performance_tests/}}
\includegraphics[width=0.90\textwidth]{logical-TRex-nic2nic}
\label{fig:logical-TRex-nic2nic}
\end{figure}
.. only:: html
.. figure:: logical-TRex-nic2nic.svg
:alt: logical-TRex-nic2nic
:align: center
Performance Tests Coverage
--------------------------
Performance tests measure following metrics for tested TRex
topologies and configurations:
- Packet Throughput: measured in accordance with :rfc:`2544`, using
FD.io CSIT Multiple Loss Ratio search (MLRsearch), an optimized binary
search algorithm, producing throughput at different Packet Loss Ratio
(PLR) values:
- Non Drop Rate (NDR): packet throughput at PLR=0%.
- Partial Drop Rate (PDR): packet throughput at PLR=0.5%.
- Two-way Packet Latency: measured both east-west and west-east at different
offered packet loads:
- 90% of discovered PDR throughput.
- 50% of discovered PDR throughput.
- 10% of discovered PDR throughput.
- Minimal offered load.
|csit-release| includes tests using the following TRex traffic profiles
(corresponding to data plane functionality when DUT is used)
performance tested across a range of NIC drivers and NIC models:
+-----------------------+----------------------------------------------+
| Traffic profile | Corresponding dataplane functionality |
+=======================+==============================================+
| IPv4 Base | IPv4 routing. |
+-----------------------+----------------------------------------------+
| IPv4 Scale | IPv4 routing with 2M entries. |
+-----------------------+----------------------------------------------+
| IPv6 Base | IPv6 routing. |
+-----------------------+----------------------------------------------+
| IPv6 Scale | IPv6 routing with 2M entries. |
+-----------------------+----------------------------------------------+
| L2BD Scale | L2 Bridge-Domain switching of untagged |
| | Ethernet frames. |
+-----------------------+----------------------------------------------+
Performance Tests Naming
------------------------
FD.io |csit-release| follows a common structured naming convention for
all performance and system functional tests, introduced in CSIT-17.01.
The naming should be intuitive for majority of the tests. Complete
description of FD.io CSIT test naming convention is provided on
:ref:`csit_test_naming`.
|
