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.. _vpp_performance_tests_release_notes:
Release Notes
=============
Changes in |csit-release|
-------------------------
#. VPP PERFORMANCE TESTS
- **AF_XDP**: Added af_xdp driver support for all test cases. Test
results will be added in sub-sequent CSIT-2106 report.
- **GTPU tunnel**: Added GTPU HW Offload IPv4 routing tests.
- **Intel Xeon Ice Lake**: Added initial test data for these
platforms. Current CSIT-2106 report data for Intel Xeon Ice Lake
comes from an external source (Intel labs running CSIT code on
"8360Y D Stepping" and "6338N" processors). For details about the
physical setup see :ref:`tested_physical_topologies`. Tested
VPP and CSIT versions are pre-release, VPP
21.06-rc0~779-gd640ae52f.
- **MLRsearch improvements**: Added support for multiple packet
throughput rates in a single search, each rate is associated
with a distinct Packet Loss Ratio (PLR) criterion. Previously
only Non Drop Rate (NDR) (PLR=0) and single Partial Drop Rate
(PDR) (PLR<0.5%) were supported. Implemented number of
optimizations improving rate discovery efficiency.
- **Reduction of tests**: Removed obsolete VPP use cases and
superfluous test combinations from continuous and report test
executions, including:
- All vts tests, obsolete use cases.
- dot1q tests apart from dot1q-l2bd, superfluous combinations.
- -100flows, -100kflows in all acl tests.
- nat44 tests
- -pps tests, replaced by -tput tests.
- h1-p1-s1 single session tests, unessential combination.
- h4096-p63-s258048 tests, unessential scale combination.
- ipsec tests
- ethip4ipsectptlispgpe.
- policy-aes128gcm.
- policy-aes128cbc-hmac256sha.
- policy-aes128cbc-hmac512sha.
- int-aes128cbc-hmac256sha.
- scale of
- 400tnlsw.
- 5000tnlsw.
- 20000tnlsw.
- 60000tnlsw.
#. TEST FRAMEWORK
- **Telemetry retouch**: Refactored telemetry retrieval from DUTs and
SUTs. Included VPP perfmon plugin telemetry with all perfmon
bundles available in VPP release.
- **Upgrade to Ubuntu 20.04 LTS**: Re-installed base operating system
to Ubuntu 20.04.2 LTS. Upgrade included also baseline Docker
containers used for spawning topology.
- **CSIT test environment** version has been updated to ver. 7, see
:ref:`test_environment_versioning`.
- **CSIT in AWS environment**: Added CSIT support for AWS c5n
instances environment. Test results will be added in sub-sequent
CSIT-2106 report.
- **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 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. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 4 | `CSIT-1789 | AVF driver does not perform RSS in a deterministic way. |
| | <https://jira.fd.io/browse/CSIT-1789>`_ | This increases standard deviation of tests with small number of flows (mainly ipsec). |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
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>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
|
