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-Test Environment
-================
-
-.. _test_environment_versioning:
-
-Environment Versioning
-----------------------
-
-CSIT test environment versioning has been introduced to track
-modifications of the test environment.
-
-Any benchmark anomalies (progressions, regressions) between releases of
-a DUT application (e.g. VPP, DPDK), are determined by testing it in the
-same test environment, to avoid test environment changes clouding the
-picture.
-To beter distinguish impact of test environment changes,
-we also execute tests without any SUT (just with TRex TG sending packets
-over a link looping back to TG).
-
-A mirror approach is introduced to determine benchmarking anomalies due
-to the test environment change. This is achieved by testing the same DUT
-application version between releases of CSIT test system. This works
-under the assumption that the behaviour of the DUT is deterministic
-under the test conditions.
-
-CSIT test environment versioning scheme ensures integrity of all the
-test system components, including their HW revisions, compiled SW code
-versions and SW source code, within a specific CSIT version. Components
-included in the CSIT environment versioning include:
-
-- **HW** Server hardware firmware and BIOS (motherboard, processsor,
-  NIC(s), accelerator card(s)), tracked in CSIT branch in
-  :file:`./docs/lab/<server_platform_name>_hw_bios_cfg.md`, e.g. `Xeon
-  Skylake servers
-  <https://git.fd.io/csit/tree/docs/lab/testbeds_sm_skx_hw_bios_cfg.md#n556>`_.
-- **Linux** Server Linux OS version and configuration, tracked in CSIT
-  Reports in `SUT Settings
-  <https://s3-docs.fd.io/csit/master/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_
-  and `Pre-Test Server Calibration
-  <https://s3-docs.fd.io/csit/master/report/vpp_performance_tests/test_environment.html#id21>`_.
-- **TRex** TRex Traffic Generator version, drivers and configuration
-  tracked in `TG Settings
-  <https://s3-docs.fd.io/csit/master/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_.
-- **CSIT** CSIT framework code tracked in CSIT release branches.
-
-Following is the list of CSIT versions to date:
-
-- Ver. 1 associated with CSIT rls1908 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls1908>`_, `Linux
-  <https://docs.fd.io/csit/rls1908/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://docs.fd.io/csit/rls1908/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls1908>`_).
-- Ver. 2 associated with CSIT rls2001 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2001>`_, `Linux
-  <https://docs.fd.io/csit/rls2001/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://docs.fd.io/csit/rls2001/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2001>`_).
-- Ver. 4 associated with CSIT rls2005 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2005>`_, `Linux
-  <https://docs.fd.io/csit/rls2005/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://docs.fd.io/csit/rls2005/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2005>`_).
-- Ver. 5 associated with CSIT rls2009 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2009>`_, `Linux
-  <https://docs.fd.io/csit/rls2009/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://docs.fd.io/csit/rls2009/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2009>`_).
-
-  - The main change is TRex data-plane core resource adjustments:
-    `increase from 7 to 8 cores and pinning cores to interfaces <https://gerrit.fd.io/r/c/csit/+/28184>`_
-    for better TRex performance with symmetric traffic profiles.
-- Ver. 6 associated with CSIT rls2101 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2101>`_, `Linux
-  <https://docs.fd.io/csit/rls2101/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://docs.fd.io/csit/rls2101/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2101>`_).
-
-  - The main change is TRex version upgrade:
-    `increase from 2.82 to 2.86 <https://gerrit.fd.io/r/c/csit/+/29980>`_.
-- Ver. 7 associated with CSIT rls2106 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2106>`_, `Linux
-  <https://s3-docs.fd.io/csit/rls2106/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://s3-docs.fd.io/csit/rls2106/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2106>`_).
-
-  - TRex version upgrade:
-    `increase from 2.86 to 2.88 <https://gerrit.fd.io/r/c/csit/+/31652>`_.
-  - Ubuntu upgrade:
-    `upgrade from 18.04 LTS to 20.04.2 LTS <https://gerrit.fd.io/r/c/csit/+/31290>`_.
-- Ver. 8 associated with CSIT rls2110 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2110>`_, `Linux
-  <https://s3-docs.fd.io/csit/rls2110/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://s3-docs.fd.io/csit/rls2110/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2110>`_).
-
-  - Intel NIC 700/800 series firmware upgrade based on DPDK compatibility
-    matrix.
-- Ver. 9 associated with CSIT rls2202 branch (`HW
-  <https://git.fd.io/csit/tree/docs/lab?h=rls2202>`_, `Linux
-  <https://s3-docs.fd.io/csit/rls2202/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
-  `TRex
-  <https://s3-docs.fd.io/csit/rls2202/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
-  `CSIT <https://git.fd.io/csit/tree/?h=rls2202>`_).
-
-  - Intel NIC 700/800 series firmware upgrade based on DPDK compatibility
-    matrix.
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