.. _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 | | | `_ | packet loss. | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 2 | `CSIT-1830 | All testbeds: All TCP tput (and pps) tests are failing for small packets. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 3 | `CSIT-1832 | 3n-alt: NDR 1 packet lost on random tests. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 4 | `CSIT-1834 | 2n-icx, 2n-skx: sporadic AVF soak tests failing to find critical load with PLRsearch. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 5 | `CSIT-1846 | 2n-skx, 2n-clx, 2n-icx: ALL 1518B TCP tput tests failing with big packet loss. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 6 | `CSIT-1847 | 2n-skx: all 10vm-1t test failed with half of packets dropped. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 7 | `CSIT-1849 | 2n-skx: UDP 16m tput tests fail to create all sessions. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ 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. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 2 | `CSIT-1800 | All Geneve L3 mode scale tests (1024 tunnels) are failing. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 3 | `CSIT-1802 | AF-XDP - NDR tests failing from time to time. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 4 | `CSIT-1803 | 3n-icx testbeds (Icelake): all IMIX aes128cbc-hmac512sha tests are failing due to excessive packet loss. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 5 | `CSIT-1804 | 3n-tsh, 3n-alt testbed (Taishan, Altra): NDR tests failing from time to time. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 6 | `CSIT-1812 | All IMIX NAT44DET 4m 16m scale tests fail due to not creating required session count. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 7 | `CSIT-1782 | Multicore AVF tests are failing when trying to create interface. | | | `_ | 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 | | | `_ | 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. | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 9 | `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. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 10 | `CSIT-1801 | 9000B payload frames not forwarded over tunnels due to violating supported Max Frame Size (VxLAN, LISP, | | | `_ | SRv6). | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 11 | `CSIT-1808 | All tests with 9000B payload frames not forwarded over memif interfaces. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 12 | `CSIT-1809 | All tests with 9000B payload frames not forwarded over vhostuser interfaces. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ 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. | | | `_ | | | +-----------------------------------------+ | | | `VPP-1876 | Worse performance with DPDK driver when MTU is set to 2022 or less. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 2 | `CSIT-1811 | All 9000B NAT44DET 64k 1m scale tests fail due to bps rate set to high on TRex. | | | `_ | | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ | 3 | `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. | +----+-----------------------------------------+-----------------------------------------------------------------------------------------------------------+ .. _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 | | | `_ | 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 | | | `_ | "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 | | | `_ | 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 | | | `_ | VPP change added more computation to slow path (in order to support multiple VRFs). | | | | Not clear if the VPP implementation is optimized enough. | +----+-----------------------------------------+-------------------------------------------------------------------------------------+