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Release Notes
=============
Changes in |csit-release|
-------------------------
#. VPP PERFORMANCE TESTS
- CSIT test environment is versioned, see
:ref:`test_environment_versioning`.
- **Upgrade to Ubuntu 20.04 LTS**: Reinstall base operating system to Ubuntu
20.04.2 LTS. Upgrade includes also baseline Docker containers used for
spawning topology.
- **AF_XDP**: Added af_xdp driver testing for all testcases.
- **GTPU tunnel**: Added GTPU HW Offload IPv4 routing tests.
- **Telemetry retouch**: Redesign telemetry retrieval from DUT. Include
VPP perfmon plugin telemetry.
#. TEST FRAMEWORK
- **CSIT PAPI support**: Due to issues with PAPI performance, VAT is
still used in CSIT for all VPP scale tests. See known issues below.
- **General Code Housekeeping**: Ongoing code optimizations,
speed ups and bug fixes.
#. PRESENTATION AND ANALYTICS LAYER
- **Graphs improvements**: Updated Packet Latency graphs,
see :ref:`latency_methodology`.
.. raw:: latex
\clearpage
.. _vpp_known_issues:
Known Issues
------------
List of known issues in |csit-release| for VPP performance tests:
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+===========================================================================================================+
| 1 | `CSIT-1782 | Multicore AVF tests are failing when trying to create interface. |
| | <https://jira.fd.io/browse/CSIT-1782>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 2 | `CSIT-1763 | Adapt ramp-up phase of nat44 tests for different frame sizes. |
| | <https://jira.fd.io/browse/CSIT-1763>`_ | Currently ramp-up phase rate and duration values are correctly set for tests with 64B frame size. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 3 | `CSIT-1671 | All CSIT scale tests can not use PAPI due to much slower performance compared to VAT/CLI (it takes much |
| | <https://jira.fd.io/browse/CSIT-1671>`_ | longer to program VPP). This needs to be addressed on the PAPI side. |
| +-----------------------------------------+ The usual PAPI library spends too much time parsing arguments, so even with async processing (hundreds of |
| | `VPP-1763 | commands in flight over socket), the VPP configuration for large scale tests (millions of messages) takes |
| | <https://jira.fd.io/browse/VPP-1763>`_ | too long. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
Root Cause Analysis for Performance Changes
-------------------------------------------
List of RCAs in |csit-release| for VPP performance changes:
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+===========================================================================================================+
| 1 | `VPP-1972 | One VPP change has decreased performance of NAT44ed processing, both slow path and fast path. |
| | <https://jira.fd.io/browse/VPP-1972>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
|
