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Test Scenarios
==============
FD.io |csit-release| report includes multiple test scenarios of VPP
centric applications, topologies and use cases. In addition it also
covers baseline tests of DPDK sample applications. Tests are executed in
physical (performance tests) and virtual environments (functional
tests).
Brief overview of test scenarios covered in this report:
#. **VPP Performance**: VPP performance tests are executed in physical
FD.io testbeds, focusing on VPP network data plane performance in
NIC-to-NIC switching topologies. Tested across Intel Cascadelake
and Skylake servers, ARM, Denverton, range of NICs (10GE, 25GE, 40GE, 100GE)
and multi-thread/multi-core configurations. VPP application runs in
bare-metal host user-mode handling NICs. TRex is used as a traffic generator.
#. **VPP Vhostuser Performance with KVM VMs**: VPP VM service switching
performance tests using vhostuser virtual interface for
interconnecting multiple NF-in-VM instances. VPP vswitch
instance runs in bare-metal user-mode handling NICs and connecting
over vhost-user interfaces to VM instances each running VPP with virtio
virtual interfaces. Similarly to VPP Performance, tests are run across a
range of configurations. TRex is used as a traffic generator.
#. **VPP Memif Performance with LXC and Docker Containers**: VPP
Container service switching performance tests using memif virtual
interface for interconnecting multiple VPP-in-container instances.
VPP vswitch instance runs in bare-metal user-mode handling NICs and
connecting over memif (Slave side) interfaces to more instances of
VPP running in LXC or in Docker Containers, both with memif
interfaces (Master side). Similarly to VPP Performance, tests are
run across a range of configurations. TRex is used as a traffic
generator.
#. **DPDK Performance**: VPP uses DPDK to drive the NICs and physical
interfaces. DPDK performance tests are used as a baseline to
profile performance of the DPDK sub-system. Two DPDK applications
are tested: Testpmd and L3fwd. DPDK tests are executed in the same
testing environment as VPP tests. DPDK Testpmd and L3fwd
applications run in host user-mode. TRex is used as a traffic
generator.
#. **VPP Functional**: VPP functional tests are executed in virtual
FD.io testbeds, focusing on VPP packet processing functionality,
including both network data plane and in-line control plane. Tests
cover vNIC-to-vNIC vNIC-to-nestedVM-to-vNIC forwarding topologies.
Scapy is used as a traffic generator.
All CSIT test data included in this report is auto-
generated from :abbr:`RF (Robot Framework)` :file:`output.xml` files
produced by :abbr:`LF (Linux Foundation)` FD.io Jenkins jobs executed
against |vpp-release| artifacts. References are provided to the
original FD.io Jenkins job results and all archived source files.
FD.io CSIT system is developed using two main coding platforms: :abbr:`RF (Robot
Framework)` and Python. |csit-release| source code for the executed test
suites is available in CSIT branch |release| in the directory
:file:`./tests/<name_of_the_test_suite>`. A local copy of CSIT source code
can be obtained by cloning CSIT git repository - :command:`git clone
https://gerrit.fd.io/r/csit`.
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