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.. _vpp_performance_tests_release_notes:
Release Notes
=============
Changes in |csit-release|
-------------------------
#. VPP PERFORMANCE TESTS
- **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.
#. TEST FRAMEWORK
- **Removed ASTF PPS tests**: They provide no real benefit
compared to TPUT tests. The ip4base variants renamed to TPUT.
- **Changed TCP TPUT profiles**: The previous ones were found to be faulty.
The new ones do not use bursts of packets to avoid CSIT-1830 and CSIT-1846.
- **CSIT test environment** version has been updated to ver. 10, 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-1827 | 3n-icx, 3n-skx: all AVF crypto tests sporadically fail. 1518B with no traffic, IMIX with excessive |
| | <https://jira.fd.io/browse/CSIT-1827>`_ | packet loss. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 2 | `CSIT-1830 | All testbeds: All TCP tput (and pps) tests are failing for small packets. |
| | <https://jira.fd.io/browse/CSIT-1830>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 3 | `CSIT-1832 | 3n-alt: NDR 1 packet lost on random tests. |
| | <https://jira.fd.io/browse/CSIT-1832>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 4 | `CSIT-1834 | 2n-icx, 2n-skx: sporadic AVF soak tests failing to find critical load with PLRsearch. |
| | <https://jira.fd.io/browse/CSIT-1834>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 5 | `CSIT-1846 | 2n-skx, 2n-clx, 2n-icx: ALL 1518B TCP tput tests failing with big packet loss. |
| | <https://jira.fd.io/browse/CSIT-1846>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 6 | `CSIT-1847 | 2n-skx: all 10vm-1t test failed with half of packets dropped. |
| | <https://jira.fd.io/browse/CSIT-1847>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 7 | `CSIT-1849 | 2n-skx: UDP 16m tput tests fail to create all sessions. |
| | <https://jira.fd.io/browse/CSIT-1849>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
Previous
________
Issues reported in previous releases which still affect the current results.
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | 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-1802 | AF-XDP - NDR tests failing from time to time. |
| | <https://jira.fd.io/browse/CSIT-1802>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 4 | `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>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 5 | `CSIT-1804 | 3n-tsh, 3n-alt testbed (Taishan, Altra): NDR tests failing from time to time. |
| | <https://jira.fd.io/browse/CSIT-1804>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 6 | `CSIT-1812 | All IMIX NAT44DET 4m 16m scale tests fail due to not creating required session count. |
| | <https://jira.fd.io/browse/CSIT-1812>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 7 | `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. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 8 | `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. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 9 | `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>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 10 | `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). |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 11 | `CSIT-1808 | All tests with 9000B payload frames not forwarded over memif interfaces. |
| | <https://jira.fd.io/browse/CSIT-1808>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 12 | `CSIT-1809 | All tests with 9000B payload frames not forwarded over vhostuser interfaces. |
| | <https://jira.fd.io/browse/CSIT-1809>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
Fixed
_____
Issues reported in previous releases which were fixed in this release:
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+===========================================================================================================+
| 1 | `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>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 2 | `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>`_ | |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
| 3 | `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. |
+----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
.. _vpp_rca:
Root Cause Analysis for Performance Changes
-------------------------------------------
List of RCAs in |csit-release| for VPP performance changes:
+----+-----------------------------------------+-------------------------------------------------------------------------------------+
| # | JiraID | Issue Description |
+====+=========================================+=====================================================================================+
| 1 | `CSIT-1851 | trending regression: various icelake tests around 2202-04-15 |
| | <https://jira.fd.io/browse/CSIT-1851>`_ | Somewhat expected consequence of a VPP usability fix, |
| | | the previous VPP compiler version was too new for the OS used. |
+----+-----------------------------------------+-------------------------------------------------------------------------------------+
| 2 | `VPP-2030 | regression: ip6base on ICX around 2022-03-23 |
| | <https://jira.fd.io/browse/VPP-2030>`_ | "Loads blocked due to overlapping with a preceding store that cannot be forwarded." |
| | | started happening in ip6-lookup graph node. |
+----+-----------------------------------------+-------------------------------------------------------------------------------------+
| 3 | `CSIT-1852 | 2n-zn2 mellanox performance cap |
| | <https://jira.fd.io/browse/CSIT-1852>`_ | Old issue, only now distinguished from CSIT-1751. |
| | | This testbed+nic combination is capped below 28 Mpps, cause not identified yet. |
+----+-----------------------------------------+-------------------------------------------------------------------------------------+
| 4 | `CSIT-1853 | trending regression: nat44ed cps around 2202-04-01 |
| | <https://jira.fd.io/browse/CSIT-1853>`_ | VPP change added more computation to slow path (in order to support multiple VRFs). |
| | | Not clear if the VPP implementation is optimized enough. |
+----+-----------------------------------------+-------------------------------------------------------------------------------------+
|
