.. _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 `_ 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 `_ 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. #. 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. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 2 | `CSIT-1800 | All Geneve L3 mode scale tests (1024 tunnels) are failing. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 3 | `CSIT-1801 | 9000B payload frames not forwarded over tunnels due to violating supported Max Frame Size (VxLAN, LISP, | | | `_ | SRv6). | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 4 | `CSIT-1808 | All tests with 9000B payload frames not forwarded over memif interfaces. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 5 | `CSIT-1809 | All tests with 9000B payload frames not forwarded over vhostuser interfaces. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 6 | `CSIT-1802 | AF-XDP - NDR tests failing from time to time. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 7 | `CSIT-1803 | 3n-icx testbeds (Icelake): all IMIX aes128cbc-hmac512sha tests are failing due to excessive packet loss. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 8 | `CSIT-1804 | 3n-tsh testbed (Taishan): NDR tests failing from time to time. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 9 | `CSIT-1805 | 3n-skx testbeds (Skylake): all hoststack quic vppecho scale tests are failing. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 10 | `CSIT-1806 | 3n-skx testbeds (Skylake): all LISP ip6-ip6 tests are failing due to 100% drops in one direction. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 11 | `CSIT-1810 | DPDK - performance regression with DPDK driver when Max Frame Size is set to less than 2023. | | | `_ | | | +-----------------------------------------+ | | | `VPP-1876 | Worse performance with DPDK driver when MTU is set to 2022 or less. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 12 | `CSIT-1811 | All 9000B NAT44DET tests fail due to bps (pps) rate set to high on TRex. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 13 | `CSIT-1812 | All IMIX NAT44DET 4m 16m scale tests fail due to not creating required session count. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ Previous ________ Issues reported in previous releases which still affect the current results. +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | # | JiraID | Issue Description | +====+=========================================+===========================================================================================================+ | 3 | `CSIT-1782 | Multicore AVF tests are failing when trying to create interface. | | | `_ | Frequency is reduced by CSIT workaround, but occasional failures do still happen. | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 4 | `CSIT-1671 | All CSIT scale tests can not use PAPI due to much slower performance compared to VAT/CLI (it takes much | | | `_ | 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. | | | `_ | More improvements needed to achieve sufficient configuration speed. | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 5 | `CSIT-1789 | IPSEC SW async scheduler tests show bad behavior. | | | `_ | VPP code is not behaving correctly when crypto workers are the bottleneck. | | +-----------------------------------------+ | | | `VPP-1998 | | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 6 | `CSIT-1785 | NAT44ED tests failing to establish all TCP sessions. | | | `_ | 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. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 7 | `CSIT-1791 | Performance regression in RDMA tests, due to CSIT environment changes. | | | `_ | 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. | | | `_ | 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. | | | `_ | 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. | +----+-----------------------------------------+------------------------------------------------------------+