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.. _vpp_performance_tests_release_notes:
Release Notes
=============
Changes in |csit-release|
-------------------------
#. VPP PERFORMANCE TESTS
- **Regressions with DPDK drivers**: Change from DPDK v21.08 to DPDK
v21.11 introduced regression across all tests using dpdk
drivers (with dpdk_plugin loaded). Compared to previous VPP
release performance drop varies in the range of -15% to -6%,
depending on test. It is related to updated MTU checks within
DPDK code and associated VPP code changes. See
`VPP v2202 release notes <https://s3-docs.fd.io/vpp/22.02/aboutvpp/releasenotes/v22.02.html>`_
and :ref:`vpp_known_issues`.
- **Number of CSIT 9000B frame tests failing**: tests with higher
encapsulation overhead are failing due to exceeding default
Ethernet Maximum Frame Size value that has been reduced by MTU
related VPP code changes. See
`VPP v2202 release notes <https://s3-docs.fd.io/vpp/22.02/aboutvpp/releasenotes/v22.02.html>`_
and :ref:`vpp_known_issues`.
- **Intel Xeon Ice Lake**: Performance test data for these platforms
is now provided by testbeds newly installed in FD.io CSIT labs.
For details about the physical setup see
:ref:`physical_testbeds_2n_icx` and
:ref:`physical_testbeds_3n_icx`.
- **Reduction of tests**: Removed certain test variations executed
iteratively for the report (as well as in daily and weekly
trending) due to physical testbeds overload.
**RC2 coverage test data is used for 2n-icx test bed**: There is only
one 2n-icx test bed and the amount of tests is large (same as 2n-skx with 4
test beds), so we decided to use test data already available from RC2
testing.
#. TEST FRAMEWORK
- **CSIT test environment** version has been updated to ver. 9, see
:ref:`test_environment_versioning`.
- **CSIT PAPI support**: Due to issues with PAPI performance, and
deprecation of VAT, VPP CLI is used in CSIT for many VPP scale
tests. See :ref:`vpp_known_issues`.
- **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
------------
New
___
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+===========================================================================================================+
| 1 | `CSIT-1799 | All NAT44-ED 16M scale tests fail while setting NAT44 address range. |
| | <https://jira.fd.io/browse/CSIT-1799>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 2 | `CSIT-1800 | All Geneve L3 mode scale tests (1024 tunnels) are failing. |
| | <https://jira.fd.io/browse/CSIT-1800>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 3 | `CSIT-1801 | 9000B payload frames not forwarded over tunnels due to violating supported Max Frame Size (VxLAN, LISP, |
| | <https://jira.fd.io/browse/CSIT-1801>`_ | SRv6). |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 4 | `CSIT-1808 | All tests with 9000B payload frames not forwarded over memif interfaces. |
| | <https://jira.fd.io/browse/CSIT-1808>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 5 | `CSIT-1809 | All tests with 9000B payload frames not forwarded over vhostuser interfaces. |
| | <https://jira.fd.io/browse/CSIT-1809>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 6 | `CSIT-1802 | AF-XDP - NDR tests failing from time to time. |
| | <https://jira.fd.io/browse/CSIT-1802>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 7 | `CSIT-1803 | 3n-icx testbeds (Icelake): all IMIX aes128cbc-hmac512sha tests are failing due to excessive packet loss. |
| | <https://jira.fd.io/browse/CSIT-1803>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 8 | `CSIT-1804 | 3n-tsh testbed (Taishan): NDR tests failing from time to time. |
| | <https://jira.fd.io/browse/CSIT-1804>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 9 | `CSIT-1805 | 3n-skx testbeds (Skylake): all hoststack quic vppecho scale tests are failing. |
| | <https://jira.fd.io/browse/CSIT-1805>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 10 | `CSIT-1810 | DPDK - performance regression with DPDK driver when Max Frame Size is set to less than 2023. |
| | <https://jira.fd.io/browse/CSIT-1810>`_ | |
| +-----------------------------------------+ |
| | `VPP-1876 | Worse performance with DPDK driver when MTU is set to 2022 or less. |
| | <https://jira.fd.io/browse/VPP-1876>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 11 | `CSIT-1811 | All 9000B NAT44DET 64k 1m scale tests fail due to bps rate set to high on TRex. |
| | <https://jira.fd.io/browse/CSIT-1811>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 12 | `CSIT-1812 | All IMIX NAT44DET 4m 16m scale tests fail due to not creating required session count. |
| | <https://jira.fd.io/browse/CSIT-1812>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
Previous
________
Issues reported in previous releases which still affect the current results.
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+===========================================================================================================+
| 1 | `CSIT-1782 | Multicore AVF tests are failing when trying to create interface. |
| | <https://jira.fd.io/browse/CSIT-1782>`_ | Frequency is reduced by CSIT workaround, but occasional failures do still happen. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 2 | `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. |
| +-----------------------------------------+ Currently, the time critical code uses VAT running large files with exec statements and CLI commands. |
| | `VPP-1763 | Still, we needed to reduce the number of scale tests run to keep overall duration reasonable. |
| | <https://jira.fd.io/browse/VPP-1763>`_ | More improvements needed to achieve sufficient configuration speed. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 3 | `CSIT-1789 | IPSEC SW async scheduler tests show bad behavior. |
| | <https://jira.fd.io/browse/CSIT-1789>`_ | VPP code is not behaving correctly when crypto workers are the bottleneck. |
| +-----------------------------------------+ |
| | `VPP-1998 | |
| | <https://jira.fd.io/browse/VPP-1998>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 4 | `CSIT-1785 | NAT44ED tests failing to establish all TCP sessions. |
| | <https://jira.fd.io/browse/CSIT-1785>`_ | At least for max scale, in allotted time (limited by session 500s timeout) due to worse |
| +-----------------------------------------+ slow path performance than previously measured and calibrated for. |
| | `VPP-1972 | CSIT removed the max scale NAT tests to avoid this issue. |
| | <https://jira.fd.io/browse/VPP-1972>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 5 | `CSIT-1791 | Performance regression in RDMA tests, due to CSIT environment changes. |
| | <https://jira.fd.io/browse/CSIT-1791>`_ | Two symptoms: 1. 10-20% regression across most tests. 2. DUT performance cap just below 38 Mpps. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
Fixed
_____
Issues reported in previous releases which were fixed in this release:
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+===========================================================================================================+
| 1 | `CSIT-1789 | AVF driver does not perform RSS in a deterministic way. |
| | <https://jira.fd.io/browse/CSIT-1789>`_ | VPP now uses the same RSS key with AVF driver as with DPDK driver. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 2 | `CSIT-1786 | IP4 and IP6 scale tests failing with no traffic forwarded. |
| | <https://jira.fd.io/browse/CSIT-1786>`_ | CSIT replaced the old single VAT command by file full of "exec" CLI commands executed by VAT. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
Root Cause Analysis for Performance Changes
-------------------------------------------
List of RCAs in |csit-release| for VPP performance changes:
+----+-----------------------------------------+------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+============================================================+
| 0 | | To be updated when descriptions in Jira tickets are ready. |
+----+-----------------------------------------+------------------------------------------------------------+
|
