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-Test Environment
-================
-
-Environment Versioning
-----------------------
-
-In order to determine any benchmark anomalies (progressions,
-regressions) between releases of a specific data-plane DUT application
-(e.g. VPP, DPDK), the DUT needs to be tested in the same test
-environment, to avoid test environment changes impacting the results and
-clouding the picture.
-
-In order to enable test system evolution, a mirror scheme is required to
-determine benchmarking anomalies between releases of specific test
-system like CSIT. This is achieved by testing the same DUT application
-version between releases of CSIT test system.
-
-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:
-
-- Server hosts hardware firmware and BIOS (motherboard, processsor,
-  NIC(s), accelerator card(s)).
-- Server host Linux operating system versions.
-- Server host Linux configuration.
-- TRex Traffic Generator version, drivers and configuration.
-- CSIT framework code.
-
-Following is the list of CSIT versions to date:
-
-- Ver. 1 associated with CSIT rls1908 git branch as of 2019-08-21.
-- Ver. 2 associated with CSIT rls2001 git branch as of 2020-03-27.
-- Ver. 3 interim associated with master branch as of 2020-xx-xx.
-- Ver. 4 associated with CSIT rls2005 git branch as of 2020-06-24.
-
-To identify performance changes due to VPP code changes from v20.01.0 to
-v20.05.0, both have been tested in CSIT environment ver. 4 and compared
-against each other. All substantial progressions has been marked up with
-RCA analysis. See Current vs Previous Release and Known Issues.
-
-CSIT environment ver. 4 has been evaluated against the ver. 2 by
-benchmarking VPP v20.01.0 in both environment versions.
-
-Physical Testbeds
------------------
-
-FD.io CSIT performance tests are executed in physical testbeds hosted by
-:abbr:`LF (Linux Foundation)` for FD.io project. Two physical testbed
-topology types are used:
-
-- **3-Node Topology**: Consisting of two servers acting as SUTs
-  (Systems Under Test) and one server as TG (Traffic Generator), all
-  connected in ring topology.
-- **2-Node Topology**: Consisting of one server acting as SUTs and one
-  server as TG both connected in ring topology.
-
-Tested SUT servers are based on a range of processors including Intel
-Xeon Haswell-SP, Intel Xeon Skylake-SP, Intel Xeon Cascade Lake-SP, Arm,
-Intel Atom. More detailed description is provided in
-:ref:`tested_physical_topologies`. Tested logical topologies are
-described in :ref:`tested_logical_topologies`.
-
-Server Specifications
----------------------
-
-Complete technical specifications of compute servers used in CSIT
-physical testbeds are maintained in FD.io CSIT repository:
-`FD.io CSIT testbeds - Xeon Cascade Lake`_,
-`FD.io CSIT testbeds - Xeon Skylake, Arm, Atom`_ and
-`FD.io CSIT Testbeds - Xeon Haswell`_.