Release Notes ============= Changes in |csit-release| ------------------------- #. **VPP Performance Tests** - **MRR Throughput**: MRR (Maximum Receive Rate) test code has now configurable trial duration and number of consecutive executions. Coverage of MRR tests has been extended across more test scenarios. MRR tests are used for continuous performance trending and for comparison between VPP releases. - **MLRsearch Throughput**: MLRsearch algorithm has been introduced for all NDR and PDR throughput tests. All tests that previously used binary search got converted to MLRsearch. Coverage of NDR/PDR tests has been extended across more test scenarios. - **L2patch Tests**: Tests measure performance of VPP L2patch, the fastest L2 forwarding path implemented in VPP, that cross-links RX and TX of two physical interfaces. - **2-Node Tests**: A new baseline set of 2-node tests covering base ip4, ip6, l2patch, l2bd, l2xc, running on new Xeon Skylake testbeds. - **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 Multi-Threading**: SMT-aware detection of server processor operation mode (HyperThreading enabled/disabled) with associated compute resource configuration including thread affinity, number of Rx queues and DPDK I/O mbufs. Tests are automatically tagged during execution to indicate executed thread configuration. - **Intel Xeon Skylake Support**: Support for 2-Node and 3-Node physical testbed topologies based on the new SuperMirco servers each with two Intel Xeon Skylake Platinum processors. Full Ansible playbooks refactor for quick server (re)installation and reference pointers of configuration. #. **Presentation and Analytics Layer** - **Performance trending**: Further improved continuous performance trending with anomaly detection and analysis. #. **Test Framework Optimizations** - **General Code Housekeeping**: Ongoing RF keywords optimizations, removal of redundant RF keywords. Performance Changes ------------------- Relative performance changes in measured NDR, PDR and MRR packet throughput in |csit-release| are calculated against the test results from |csit-release-1| report, for tests running on 3-Node Intel Xeon Haswell testbeds (3n-hsw) in 1-core, 2-core and 4-core (MRR only) configurations. 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 CSV and pretty ASCII formats: - `CSV 1t1c NDR changes <../_static/vpp/performance-changes-1t1c-ndr.csv>`_, - `CSV 2t2c NDR changes <../_static/vpp/performance-changes-2t2c-ndr.csv>`_, - `ASCII 1t1c NDR changes <../_static/vpp/performance-changes-1t1c-ndr.txt>`_, - `ASCII 2t2c NDR changes <../_static/vpp/performance-changes-2t2c-ndr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_, with RF result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. PDR Changes ~~~~~~~~~~~ PDR throughput changes between releases are available in CSV and pretty ASCII formats: - `CSV 1t1c PDR changes <../_static/vpp/performance-changes-1t1c-pdr.csv>`_, - `CSV 2t2c PDR changes <../_static/vpp/performance-changes-2t2c-pdr.csv>`_, - `ASCII 1t1c PDR changes <../_static/vpp/performance-changes-1t1c-pdr.txt>`_, - `ASCII 2t2c PDR changes <../_static/vpp/performance-changes-2t2c-pdr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_, with RF result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. MRR Changes ~~~~~~~~~~~ MRR throughput changes between releases are available in CSV and pretty ASCII formats: - `CSV 1t1c MRR changes <../_static/vpp/performance-changes-1t1c-mrr.csv>`_, - `CSV 2t2c MRR changes <../_static/vpp/performance-changes-2t2c-mrr.csv>`_, - `CSV 4t4c MRR changes <../_static/vpp/performance-changes-4t4c-mrr.csv>`_, - `ASCII 1t1c MRR changes <../_static/vpp/performance-changes-1t1c-mrr.txt>`_, - `ASCII 2t2c MRR changes <../_static/vpp/performance-changes-2t2c-mrr.txt>`_, - `ASCII 4t4c MRR changes <../_static/vpp/performance-changes-4t4c-mrr.txt>`_. .. note:: Test results have been generated by `FD.io test executor vpp performance job 3n-hsw`_, with RF result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. Skx vs. Hsw Comparison ---------------------- Relative performance comparison in measured NDR, PDR and MRR packet throughput is calculated for tests executed on 3-Node Skylake (3n-skx) and 3-Node Haswell (3n-hsw) physical testbed types in 1-core configurations. NDR Comparison ~~~~~~~~~~~~~~ NDR comparison between testbed types is available in CSV and pretty ASCII formats: - `CSV 1c NDR comparison <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-ndr.csv>`_, - `ASCII 1c NDR comparison <../_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 RF result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. PDR Comparison ~~~~~~~~~~~~~~ PDR comparison between testbed types is available in CSV and pretty ASCII formats: - `CSV 1c PDR comparison <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-pdr.csv>`_, - `ASCII 1c PDR comparison <../_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 RF result files csit-vpp-perf-|srelease|-\*.zip `archived here <../_static/archive/>`_. MRR Comparison ~~~~~~~~~~~~~~ MRR comparison between testbed types is available in CSV and pretty ASCII formats: - `CSV 1c MRR comparison <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-mrr.csv>`_, - `ASCII 1c MRR comparison <../_static/vpp/performance-compare-testbeds-3n-hsw-3n-skx-mrr.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 RF 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 | High failure rate of api call | VPP-1361 | Failure rate: 30-40% of tests failing due to interfaces not | | | sw_interface_set_flags [admin-up|link-up] | | in link-up state after API call sw_interface_set_flags. | +---+-------------------------------------------------+------------+-----------------------------------------------------------------+ | 3 | Scale IPSecHW Interface mode throughput | CSIT-1234 | IPSec throughput regression: NDR -28%..-31%, PDR -28%..-31%, | | | regression. | | MRR -40%. Affects IPSec HW Scale 1000tnl tests with Int mode. | +---+-------------------------------------------------+------------+-----------------------------------------------------------------+