docs/report/vpp_performance_tests/csit_release_notes.rst

   1 .. _vpp_performance_tests_release_notes:
   2
   3 Release Notes
   4 =============
   5
   6 Changes in |csit-release|
   7 -------------------------
   8
   9 #. VPP PERFORMANCE TESTS
  10
  11    - **Regressions with DPDK drivers**: Change from DPDK v21.08 to DPDK
  12      v21.11 introduced regression across all tests using dpdk
  13      drivers (with dpdk_plugin loaded). Compared to previous VPP
  14      release performance drop varies in the range of -15% to -6%,
  15      depending on test. It is related to updated MTU checks within
  16      DPDK code and associated VPP code changes. See
  17      `VPP v2202 release notes <https://s3-docs.fd.io/vpp/22.02/aboutvpp/releasenotes/v22.02.html>`_
  18      and :ref:`vpp_known_issues`.
  19
  20    - **Number of CSIT 9000B frame tests failing**: tests with higher
  21      encapsulation overhead are failing due to exceeding default
  22      Ethernet Maximum Frame Size value that has been reduced by MTU
  23      related VPP code changes. See
  24      `VPP v2202 release notes <https://s3-docs.fd.io/vpp/22.02/aboutvpp/releasenotes/v22.02.html>`_
  25      and :ref:`vpp_known_issues`.
  26
  27    - **Intel Xeon Ice Lake**: Performance test data for these platforms
  28      is now provided by testbeds newly installed in FD.io CSIT labs.
  29      For details about the physical setup see
  30      :ref:`physical_testbeds_2n_icx` and
  31      :ref:`physical_testbeds_3n_icx`.
  32
  33    - **Reduction of tests**: Removed certain test variations executed
  34      iteratively for the report (as well as in daily and weekly
  35      trending) due to physical testbeds overload.
  36
  37 #. TEST FRAMEWORK
  38
  39    - **CSIT test environment** version has been updated to ver. 9, see
  40      :ref:`test_environment_versioning`.
  41
  42    - **CSIT PAPI support**: Due to issues with PAPI performance, and
  43      deprecation of VAT, VPP CLI is used in CSIT for many VPP scale
  44      tests. See :ref:`vpp_known_issues`.
  45
  46    - **General Code Housekeeping**: Ongoing code optimizations and bug
  47      fixes.
  48
  49 #. PRESENTATION AND ANALYTICS LAYER
  50
  51    - **Graphs improvements**: Updated Packet Latency graphs,
  52      see :ref:`latency_methodology`.
  53
  54 .. raw:: latex
  55
  56     \clearpage
  57
  58 .. _vpp_known_issues:
  59
  60 Known Issues
  61 ------------
  62
  63 New
  64 ___
  65
  66 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  67 |  # | JiraID                                  | Issue Description                                                                                         |
  68 +====+=========================================+===========================================================================================================+
  69 |  1 | `CSIT-1799                              | All NAT44-ED 16M scale tests fail while setting NAT44 address range.                                      |
  70 |    | <https://jira.fd.io/browse/CSIT-1799>`_ |                                                                                                           |
  71 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  72 |  2 | `CSIT-1800                              | All Geneve L3 mode scale tests (1024 tunnels) are failing.                                                |
  73 |    | <https://jira.fd.io/browse/CSIT-1800>`_ |                                                                                                           |
  74 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  75 |  3 | `CSIT-1801                              | 9000B payload frames not forwarded over tunnels due to violating supported Max Frame Size (VxLAN, LISP,   |
  76 |    | <https://jira.fd.io/browse/CSIT-1801>`_ | SRv6).                                                                                                    |
  77 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  78 |  4 | `CSIT-1808                              | All tests with 9000B payload frames not forwarded over memif interfaces.                                  |
  79 |    | <https://jira.fd.io/browse/CSIT-1808>`_ |                                                                                                           |
  80 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  81 |  5 | `CSIT-1809                              | All tests with 9000B payload frames not forwarded over vhostuser interfaces.                              |
  82 |    | <https://jira.fd.io/browse/CSIT-1809>`_ |                                                                                                           |
  83 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  84 |  6 | `CSIT-1802                              | AF-XDP - NDR tests failing from time to time.                                                             |
  85 |    | <https://jira.fd.io/browse/CSIT-1802>`_ |                                                                                                           |
  86 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  87 |  7 | `CSIT-1803                              | 3n-icx testbeds (Icelake): all IMIX aes128cbc-hmac512sha tests are failing due to excessive packet loss.  |
  88 |    | <https://jira.fd.io/browse/CSIT-1803>`_ |                                                                                                           |
  89 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  90 |  8 | `CSIT-1804                              | 3n-tsh testbed (Taishan): NDR tests failing from time to time.                                            |
  91 |    | <https://jira.fd.io/browse/CSIT-1804>`_ |                                                                                                           |
  92 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  93 |  9 | `CSIT-1805                              | 3n-skx testbeds (Skylake): all hoststack quic vppecho scale tests are failing.                            |
  94 |    | <https://jira.fd.io/browse/CSIT-1805>`_ |                                                                                                           |
  95 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
  96 | 10 | `CSIT-1810                              | DPDK - performance regression with DPDK driver when Max Frame Size is set to less than 2023.              |
  97 |    | <https://jira.fd.io/browse/CSIT-1810>`_ |                                                                                                           |
  98 |    +-----------------------------------------+                                                                                                           |
  99 |    | `VPP-1876                               | Worse performance with DPDK driver when MTU is set to 2022 or less.                                       |
 100 |    | <https://jira.fd.io/browse/VPP-1876>`_  |                                                                                                           |
 101 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 102 | 11 | `CSIT-1811                              | All 9000B NAT44DET 64k 1m scale tests fail due to bps rate set to high on TRex.                           |
 103 |    | <https://jira.fd.io/browse/CSIT-1811>`_ |                                                                                                           |
 104 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 105 | 12 | `CSIT-1812                              | All IMIX NAT44DET 4m 16m scale tests fail due to not creating required session count.                     |
 106 |    | <https://jira.fd.io/browse/CSIT-1812>`_ |                                                                                                           |
 107 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 108
 109
 110 Previous
 111 ________
 112
 113 Issues reported in previous releases which still affect the current results.
 114
 115 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 116 |  # | JiraID                                  | Issue Description                                                                                         |
 117 +====+=========================================+===========================================================================================================+
 118 |  1 | `CSIT-1782                              | Multicore AVF tests are failing when trying to create interface.                                          |
 119 |    | <https://jira.fd.io/browse/CSIT-1782>`_ | Frequency is reduced by CSIT workaround, but occasional failures do still happen.                         |
 120 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 121 |  2 | `CSIT-1671                              | All CSIT scale tests can not use PAPI due to much slower performance compared to VAT/CLI (it takes much   |
 122 |    | <https://jira.fd.io/browse/CSIT-1671>`_ | longer to program VPP). This needs to be addressed on the PAPI side.                                      |
 123 |    +-----------------------------------------+ Currently, the time critical code uses VAT running large files with exec statements and CLI commands.     |
 124 |    | `VPP-1763                               | Still, we needed to reduce the number of scale tests run to keep overall duration reasonable.             |
 125 |    | <https://jira.fd.io/browse/VPP-1763>`_  | More improvements needed to achieve sufficient configuration speed.                                       |
 126 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 127 |  3 | `CSIT-1789                              | IPSEC SW async scheduler tests show bad behavior.                                                         |
 128 |    | <https://jira.fd.io/browse/CSIT-1789>`_ | VPP code is not behaving correctly when crypto workers are the bottleneck.                                |
 129 |    +-----------------------------------------+                                                                                                           |
 130 |    | `VPP-1998                               |                                                                                                           |
 131 |    | <https://jira.fd.io/browse/VPP-1998>`_  |                                                                                                           |
 132 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 133 |  4 | `CSIT-1785                              | NAT44ED tests failing to establish all TCP sessions.                                                      |
 134 |    | <https://jira.fd.io/browse/CSIT-1785>`_ | At least for max scale, in allotted time (limited by session 500s timeout) due to worse                   |
 135 |    +-----------------------------------------+ slow path performance than previously measured and calibrated for.                                        |
 136 |    | `VPP-1972                               | CSIT removed the max scale NAT tests to avoid this issue.                                                 |
 137 |    | <https://jira.fd.io/browse/VPP-1972>`_  |                                                                                                           |
 138 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 139 |  5 | `CSIT-1791                              | Performance regression in RDMA tests, due to CSIT environment changes.                                    |
 140 |    | <https://jira.fd.io/browse/CSIT-1791>`_ | Two symptoms: 1. 10-20% regression across most tests. 2. DUT performance cap just below 38 Mpps.          |
 141 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 142
 143 Fixed
 144 _____
 145
 146 Issues reported in previous releases which were fixed in this release:
 147
 148 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 149 |  # | JiraID                                  | Issue Description                                                                                         |
 150 +====+=========================================+===========================================================================================================+
 151 |  1 | `CSIT-1789                              | AVF driver does not perform RSS in a deterministic way.                                                   |
 152 |    | <https://jira.fd.io/browse/CSIT-1789>`_ | VPP now uses the same RSS key with AVF driver as with DPDK driver.                                        |
 153 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 154 |  2 | `CSIT-1786                              | IP4 and IP6 scale tests failing with no traffic forwarded.                                                |
 155 |    | <https://jira.fd.io/browse/CSIT-1786>`_ | CSIT replaced the old single VAT command by file full of "exec" CLI commands executed by VAT.             |
 156 +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+
 157
 158 Root Cause Analysis for Performance Changes
 159 -------------------------------------------
 160
 161 List of RCAs in |csit-release| for VPP performance changes:
 162
 163 +----+-----------------------------------------+------------------------------------------------------------+
 164 |  # | JiraID                                  | Issue Description                                          |
 165 +====+=========================================+============================================================+
 166 |  0 |                                         | To be updated when descriptions in Jira tickets are ready. |
 167 +----+-----------------------------------------+------------------------------------------------------------+