Release Notes ============= Changes in |csit-release| ------------------------- #. **VPP performance tests** - *MRR tests* - Maximum Receive Rate tests measure the packet forwarding rate under the maximum load offered by traffic generator over a set trial duration, regardless of packet loss. MRR tests are used for continuous performance trending and for comparison between releases. - *MLR tests* - NDR and PDR tests measure the packet forwarding rate using MLRsearch library by traffic generator. All tests that previously used binary search were converted to MLRsearch. - *L2patch tests* - Tests measure performance of L2patch, cross linking RX and TX of two physical interfaces. - *2-node tests* - Baseline set of 2-node tests covering base ip4, ip4, l2patch, l2bd, l2xc. - *Generated tests* - Simplified and unified test structure, semi-autogenerated by generator script. Test generator is currently able to create test combinations with various frame size and cores combinations. All existing test cases were converted to new format. - *Simultaneous multithreading* - SMT-aware automatic detection and resource configuration including thread affinity, number of rx queues and DPDK I/O mbufs. Tests are automatically tagged during execution indicating configuration. - *Intel Skylake* - Topologies consisting of 2-node and 3-node using SuperMirco servers each equipped with two Intel Xeon Skylake Platinum processors. #. **Presentation and Analytics Layer** - *Performance trending* - Added continuous performance trending and analysis. New Performance Trending and Performance Analysis jobs executed regular throughput tests, with results being subsequently analysed and trend and anomalies summarized and presented in VPP Performance Dashboard and trendline graphs. #. **Test Framework Optimizations** - *Performance tests efficiency* - Qemu build/install optimizations, warmup phase handling, vpp restart handling. Resulted in improved stability and reduced total execution time by 30% for single pkt size e.g. 64B/78B. - *General code housekeeping* - ongoing RF keywords optimizations, removal of redundant RF keywords. Performance Changes ------------------- Relative performance changes in measured packet throughput in |csit-release| are calculated against the results from |csit-release-1| report. Listed mean and standard deviation values are computed based on a series of the same tests executed against respective VPP releases to verify test results repeatability, with percentage change calculated for mean values. Note that the standard deviation is quite high for a small number of packet throughput tests, what indicates poor test results repeatability and makes the relative change of mean throughput value not fully representative for these tests. The root causes behind poor results repeatability vary between the test cases. NDR Changes ~~~~~~~~~~~ NDR throughput changes between releases are available in a CSV and pretty ASCII formats: - `csv format for 1t1c <../_static/vpp/performance-changes-1t1c-ndr.csv>`_, - `csv format for 2t2c <../_static/vpp/performance-changes-2t2c-ndr.csv>`_, - `pretty ASCII format for 1t1c <../_static/vpp/performance-changes-1t1c-ndr.txt>`_, - `pretty ASCII format for 2t2c <../_static/vpp/performance-changes-2t2c-ndr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_, with Robot Framework result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. PDR Changes ~~~~~~~~~~~ PDR throughput changes between releases are available in a CSV and pretty ASCII formats: - `csv format for 1t1c <../_static/vpp/performance-changes-1t1c-pdr.csv>`_, - `csv format for 2t2c <../_static/vpp/performance-changes-2t2c-pdr.csv>`_, - `pretty ASCII format for 1t1c <../_static/vpp/performance-changes-1t1c-pdr.txt>`_, - `pretty ASCII format for 2t2c <../_static/vpp/performance-changes-2t2c-pdr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_, with Robot Framework result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. MRR Changes ~~~~~~~~~~~ MRR small packet throughput changes between releases are available in a CSV and pretty ASCII formats: - `csv format for 1t1c <../_static/vpp/performance-changes-1t1c-mrr.csv>`_, - `csv format for 2t2c <../_static/vpp/performance-changes-2t2c-mrr.csv>`_, - `csv format for 4t4c <../_static/vpp/performance-changes-4t4c-mrr.csv>`_, - `pretty ASCII format for 1t1c <../_static/vpp/performance-changes-1t1c-mrr.txt>`_, - `pretty ASCII format for 2t2c <../_static/vpp/performance-changes-2t2c-mrr.txt>`_, - `pretty ASCII format for 4t4c <../_static/vpp/performance-changes-4t4c-mrr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp mrr jobs `_ with Robot Framework result files csit-vpp-perf-mrr-daily-master__*__output.xml.gz `archived here `_. Comparison Across Testbeds -------------------------- Relative performance changes in measured packet throughputon 3-Node Skx testbed are calculated against the results measured on 3-Node Hsw testbed. NDR Changes ~~~~~~~~~~~ NDR changes between testbeds are available in a CSV and pretty ASCII formats: - `csv format for ndr <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-ndr.csv>`_, - `pretty ASCII format for ndr <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-ndr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_ and `FD.io test executor vpp performance job 3n-skx`_ with Robot Framework result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. PDR Changes ~~~~~~~~~~~ PDR throughput changes between testbeds are available in a CSV and pretty ASCII formats: - `csv format for pdr <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-pdr.csv>`_, - `pretty ASCII format for pdr <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-pdr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_ and `FD.io test executor vpp performance job 3n-skx`_ with Robot Framework result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. Throughput Trending ------------------- In addition to reporting throughput changes between VPP releases, CSIT provides continuous performance trending for VPP master branch: #. `VPP Performance Dashboard `_ - per VPP test case throughput trend, trend compliance and summary of detected anomalies. #. `Trending Methodology `_ - throughput test metrics, trend calculations and anomaly classification (progression, regression, outlier). #. `Trendline Graphs `_ - per VPP build MRR throughput measurements against the trendline with anomaly highlights, with associated CSIT test jobs. Known Issues ------------ List of known issues in |csit-release| for VPP performance tests: +---+-------------------------------------------------+------------+-----------------------------------------------------------------+ | # | Issue | Jira ID | Description | +===+=================================================+============+=================================================================+ | 1 | Sporadic (1 in 200) NDR discovery test failures | CSIT-570 | DPDK reporting rx-errors, indicating L1 issue. Suspected issue | | | on x520. | | with HW combination of X710-X520 in LF testbeds. Not observed | | | | | outside of LF testbeds. | +---+-------------------------------------------------+------------+-----------------------------------------------------------------+ | 2 | Lower than expected NDR throughput of DPDK | CSIT-571 | Suspected NIC firmware or DPDK driver issue affecting NDR and | | | testpmd and VPP L2 path NDR throughput with | | PDR throughput on XL710 and X710 NICs. | | | xl710 and x710 NICs, compared to x520 NICs. | | | +---+-------------------------------------------------+------------+-----------------------------------------------------------------+ | 3 | Tagged Ethernet dot1q and dot1ad L2 path | CSIT-1066 | Tagged Ethernet dot1q and dot1ad L2 path throughput regression: | | | throughput regression. | | NDR -2%..-5%, PDR -2%..-6%, MRR. Affects l2xc and l2bd | | | | | performance tests. | +---+-------------------------------------------------+------------+-----------------------------------------------------------------+ | 4 | IPSec (software, no QAT HW) throughput | CSIT-1064 | IPSec throughput regression: NDR -3%..-8%, PDR -2%..-8%, MRR | | | regression. | | -3%..-7%. Affects IPSec SW tests, QAT HW tests not affected. | +---+-------------------------------------------------+------------+-----------------------------------------------------------------+